No. XIX.— COLEOPTERA, CUECULIONIDiE. By George Charles Champion, A.L.S., F.Z.S. (Plates 22—24.) Read 7th May, 1914. The Curculionidse here enumerated from the Seychelles, Aldabra, Chagos, and the adjacent islands number 134 species, 127 only of which can at present be identified with described forms. The presence of one entirely new group, the Phoenicobatina, including three genera and 28 species, shows that these islands have a comparatively I'ich weevil- fauna, now brought to light by Mr Hugh Scott's exhaustive methods of collecting in the mountain forests. Probably he is almost the first entomologist who has set to work to examine properly the leaf-bases of palms (more especially of the Coco-de-Mer) and screw- pines in these or any other tropical regions'^'. Hence, a very interesting series of minute forms has been discovered, and, as might be anticipated, they are nearly all new. The Cossonina, as usual in various Oceanic Islands (even in cooler regions like St Helena and New Zealand), are abundantly represented, and include 50 species, with ten new genera. The Trypetina and Antliarrhina (like most of the Phoenicobatina) are probably attached to palms, and doubtless endemic. Amongst the Cryptorrhynchina there is a singular dearth of apterous forms, one species only (an Acalles) being represented. The con- spicuous winged Otiorrhynchids, Cratopus spp., are, on the other hand, abundant, in individuals, both on the coast and in the mountains, though but few species are present. The apterous Hylobiina and Anchonina, insects living amongst dead leaves on the ground, are also characteristic weevils in the Seychelles, several species being common in the mountain forests. The three apterous Otiorrhynchids belong to as many genera, one of which seems to occur also in Madagascar. The Attelabinee, Barina, Cyladina, and Calandrinse are either introduced forms, or belong to genera occurring elsewhere, in Ceylon, Madagascar, S. Africa, &c. Out of a total of 134 species, at least 100 are probably endemic, and the entire group Phoenicobatina, so far as at present known, is peculiar to the Seychelles. Kolbe's list (1910) includes 17 species only for the same groups of the Rhynchophora. The Hawaiian Islands possess almost the same number of Curcuhonidse [vide Perkins, Introd. Fauna Hawaiiensis, p. xxii. (1913)]— 132 species, in 12 genera, endemic, and 14 species, in 9 genera, introduced. * See the general account of the collecting in Vol. xiv. of these Transactions, 1910, pp. 24, 25. 394 PERCY SLADEN TRUST EXPEDITION The insects enumerated in the following pages were all captured by Mr Hugh Scott, excepting those obtained in 1905, which were collected by the H.M.S. " Sealark " Expedition, and some obtained by other collectors, whose names are given : he is also responsible for the notes on habits and data of capture in this paper. Types. A first set, including the types of all new forms, will be placed in the British Museum, and a second set retained in the Cambridge University Museum. List of Species. Sub-fam. Attelabinse. 1. Evx)ps viriditinctus, n. sp. Sub-fam. Otiorrhynchinse. 2. Lepydnus (n. gen.) nepenthicola, n. sp. 3. Brachycyrtus 'minor, n. sp. 4. Epirrhainphus (n. gen.) litoralis, n. sp. 5. Cratopus adspersus, C. O. Wat. 6. „ griseovestitus, Linell. 7. ,, viridisparsus, Fairm. 8. „ aurostriatus, Fairm. 9. ,, segregatus, n. sp. „ var. subcinctus, n. 10. „ muticus, n. sp. Sub-fam. Curculioninse. Group Hylobiina. 11. Cycloterodes sechellaruin, Kolbe. 12. Eucycloterodes (n. gen.) terreus, n. sp. 13. Oonotrachelus (n. gen.) 5-carinatus, n. sp. Group Anchonina. 14. Tanyomus (n. gen.) palmicola, n. sp. 15. Cycloierinus humeroalatus, Kolbe. 16. „ ampliatus, Kolbe. 17. ,, foveatus, Kolbe. 18. ,, carinifer, n. sp. 19. ,, canaliculatus, n. sp. 20. „ unicristatus, n. sp. 21. „ erosus, n. sp. 22. ,, sphceropierus, n. sp. 23. „ microphthalmus, n. sp. 24. ,, ccecus, n. sp. Group PhcEnicobatina, n. 25. Phoenicohates (n. gen.) vittatus, n. sp. 26. „ flexirostris, n. sp. 27. „ cylindricus, n. sp. 28. ,, parallelus, n. sp. 29. „ nigrolimbatus, n. sp. 30. „ alhosetosus, n. sp. 31. „ fortirostris, n. sp. 32. Phoenicobaies duplovestitus, n. sp. 33. „ praslinensis, n. sp. 34. ,, depressirostris, n. sp. 35. „ foveiventris, n. sp. 36. „ curvipes, n. sp. 37. „ simplex, n. sp. 38. ,, tenuis, n. sp. 39. ,, peropacus, n. sp. 40. ,, gibbirostris, n. sp. 41. ,, stricticollis, n. sp. 42. „ stevensonice, n. sp. 43. „ hispidulus, n. sp. 44. ,, cuspidatus, n. sp. 45. „ lodoicece, n. sp. 46. „ pandanicola, n. sp. 47. ,, alatus, n. sp. 48. „ rufitarsis, n. sp. 49. „ sebertensis, n. sp. 50. Phoenicobatopsis (n. gen.) eahinatus, n. sp. 51. ,, seticeps, n. sp. 52. Phosnicogenus (n. gen.) inermis, n. sp. Group Anthonomina. 53. Endceopsis (n. gen.) curvimanus, n. sp. 54. „ anthonomoides, n. sp. 55. ,, delicatus, n. sp. 56. RhynchcBnus spissus, n. sp. Group Cryptorrhynchina. 57. Acalles seychellensis, n. sp. 58. *Camptorrhinus brullei, Boh. 59. Cryptorrhynchus mangifera, F. 60. ,, 'erratus, n. sp. 61. Cryptorrhynchidius (n. gen.) graniger, n. sp. 62. Rhetogenes (n. gen.) sexcristatus, n. sp. 63. „ spurcus, n. sp. 64. Baridiomorpha (n. gen.) triplaris, n. sp. 65. Rhombosoma (n. gen.) acuminatum, n. sp. 66. Scytha (n. gen.) aldabrana, n. sp. Group Zygopina. 67. *Sphadasmus granocostatus, Fairm. The species marked with an asterisk are not represented in the collections made by the expedition. CHAMPION— COLEOPTERA ; CURCULIONID^ 395 99. Stenotrupis polita, n. sp. 100. „ sericata, n. sp. 101. ,, nitidula, n. sp. 102. „ silvicola, n. sp. 103. ■ „ dumetorutn, n. sp. 104. Microtrupis (n. gen.) longipennis, n. sp. 105. „ puncticeps, n. sp. 106. „ piligera, n. sp. 107. Lasiotrupis (n. gen.) clavigera, n. sp. 108. Microhimatium (n. gen.) pubescejis, n. sp. 109. Himatinum conjluum, n. sp. 110. „ rugipenne, n. sp. 111. ,, breviusculuin, n. sp. 112. Melarrhinus incrustatus, n. sp. 113. Phloeophagosoma conicicolle, n. sp. 114. „ aldabranum, n. sp. 115. Oxydema fusiforme, Woll. 116. Orihotemnus filiformis, n. sp. 117. Cossonus incivilis, P&hr. 118. ,, suturalis, Boh. 119. Rhyncolosoma (n. gen.) dubium, Gahan. 120. Tetragonorrhamphus (n. gen.) tuber culirostris, n. sp. 121. Coptus latiusculus, n. sp. 122. Proeces compressicollis, n. sp. 123. ,, silvestris, Kolbe. 124. iSfenoniimus orientalis, n. sp. 125. Stenoscelis m-assifrons, Woll. 126. Dendroctonomorphus muriceus, n. sp. Sub-fan). Calandrinae. 127. Eugnoristus braueri, Kolbe. 128. Trochorrhopalus strangulatus, Gyll. 129. Cosmopolites sordidus, Germ. 130. Polytus mellerborgi, Boh. 131. Calandra oryzm, L. 132. „ linearis, Herbst. 133. „ exarata, Boh. 134. ,, stigmaticollis, Gyll. Sub-fam. Attelabinse. Euops. Euops Schonherr, Gen. Cure. v. p. 318 (1839); Jekel, Ins. Saund., Ooleopt., p. 219 (1860); Lacordaire, Gen. Col. vi. p. 550. The single species of this genus found by Mr Scott in Silhouette is probably endemic. It belongs to the section Synaptops, Jekel, and comes near E. nietneri and E. howringi, Jekel, and E. {Rhynchites) suffundens, Walk., all of which are from India or Ceylon. 1. Euops viriditinctus, n. sp. (PI. 22, figs. 1, la, ^.) Shining, seneo-piceous, the upper surface often reddish-brown with an aeneous lustre, in mature examples greenish-Heneous above and beneath, the legs (a broad space on the SECOND SERIES— ZOOLOGY, VOL. XVL 51 396 PERCY SLADEN TRUST EXPEDITION femora excepted) and antennae rufo-testaceous or reddish-brown ; almost glabrous above, the punctures on the pygidium, under surface, and legs each bearing a minute hair-like scale, the tibise very finely ciliate within, the hairs longer in ^. Rostrum stout, widened outwards, finely punctate, very little longer than the enormously developed coalescent eyes ; head with the basal portion subglobose, moderately exserted, and sparsely minutely punctate. Prothorax transverse, very convex, campanulate, bisinuate and sharply mar- gined at the base ; transversely strigose and faintly punctate, deeply sulcate within the basal margin and shallowly grooved within the anterior margin. Elytra broad, sub- triangular, transversely depressed on the disc below the base, separately rounded at the apex ; sharply punctate-striate, the seriate punctures (except at the base) extending outwards across the broad, subangular interstices, which thus appear strongly transversely rugose. Legs elongated, the anterior pair especially, in $, shorter in $ ; tibiae finely serrulate within, the anterior and intermediate pairs bowed, elongate, and strongly unguiculate in $, the anterior pair short and deeply sinuate within in $. Length 3 — 4 mm. (^?). Log. Seychelles : Silhouette. Fourteen specimens, varying a little in colour. " Beaten from bushes or small trees, on or near the plateau of Mare aux Cochons, at an altitude of about 1000 feet, Sept. 1908." The smoother head, eeneo-piceous colour, &c., separate this species from E. suffundens. Sub-fam. Otiorrhynchinse. Sect, otiorrhynchinse Apterae. Lepydnus, n. gen. Rostrum broad, short, not longer than the head, truncate at the tip, sulcate, the median groove terminating in a smooth fovea in front, the scrobes lateral, very large, deep, angular, extending backwards to above the eyes; antennae long, inserted at the apex of the rostrum, rather slender, the scape curved, joint 1 of the funiculus obovate, 2 — 7 small and submoniliform, the club large, ovate ; eyes rounded, convex, lateral, coarsely facetted; mandibular scars small ; mentum transverse, covering the maxillae; prothorax constricted at the base and towards the apex, truncate in front and behind ; scutellum wanting ; elytra oblongo-cordate, broadly inflexed at the sides beneath, the humeri extending forwards ; anterior and intermediate coxae narrowly, the posterior coxae very widely, separated ; metasternum very short, the episterna not visible ; abdomen greatly narrowed posteriorly, segments 1 and 2 equal in length, 3 and 4 short, 3 — 5 narrow, the intercoxal process broadly truncate in front, the first suture deeply sinuate ; legs rather slender ; femora clavate ; anterior and intermediate tibiae sharply, the posterior tibiae feebly, unguiculate, the latter widened at the tip and with the cavernous articular space narrow and apical ; tarsi with joint 3 bilobed, the claws long, stout, and divergent ; body oval, squamose and setose throughout, apterous. Type, L. nepenthicola. CHAMPION— COLEOPTERA ; OURCULIONID^ 397 This peculiar little apterous Otiorrhyncliid may be known by its short, sulcate, apically foveate rostrum, with large, deep, lateral scrobes, the apically inserted antennae, the convex eyes, the subcordate, basally emarginate elytra, the equal length of the first two ventral segments, the powerful tarsal claws, and the strongly setose body, antennee, and legs. The insect appears to inhabit the forests on the highest peaks of Silhouette and Mahe. Some of the specimens captured by Mr Scott were found in the pitchers of Nepenthes. Lepydnus belongs to Lacordaire's " Otiorhynchides vrais." 2. Lepydnus nepenthicola, n. sp. (PL 22,' figs. 2, 2 a.) Moderately elongate, somewhat flattened above, piceous or reddish-brown ; somewhat thickly clothed with minute cupreous or golden scales, which are in great part hidden by a dark brown exudation, and also, the antennas and legs included, set with blunt, dark setae, the setse often long and erect on the elytra ; the surface closely punctate. Rostrum shallowly trisulcate, the median groove terminating in a deep fovea. Prothorax nearly as long as broad, abruptly constricted and much narrowed anteriorly, and also constricted just before the base, the disc somewhat uneven. Elytra much wider than the prothorax, the humeri rounded and anteriorly produced ; with rows of closely placed coarse punctures, the interstices densely punctate and feebly convex. Beneath with coarse scattered punctures intermixed with the fine punctuation ; metasternum slightly hollowed down the middle in $. Length (includ. rostr.) 3^ — 4^, breadth ll — 2 mm. (,??). Loc. Seychelles: Silhouette, Mahe. Silhouette: near Mont Pot-a-eau, ca. 1500 feet, VIII. 1908, 3 specimens; found floating in pitchers of Nepe^ithes on highest peaks, over 2000 feet, VIII. 1908, 2 specimens. Mahe : Mare aux Oochons district, 1500 — 2000 feet, I — II. 1909 ; from forest of stunted " Capucin " {Northed) trees on summit of "Montague Anse Major," 2000 feet, II. 1909 ; Cascade Estate. Ten specimens, varying in size, in the development of the humeri, and in the length of the elytral setse. The setse on the tarsi extend on to the claw-joint, and those on the antennal scape are very conspicuous. The cupreous scales are scarcely visible in dirty examples. In one of the two Silhouette specimens labelled as found in Nepenthes the elytral setae are short and wholly decumbent, like those on the prothorax. Brachycyrtus. Brachycyrtus Fairmaire, Ann. Soc. Ent. France, 1886, p. 7&, pi. 2, fig. 10. This genus is based upon a single species from Madagascar. An insect found by Fryer on Aldabra agrees so nearly with Fairmaire's description and figure of B. seto- fasciatus* that it can be treated as congeneric for the present. 3. Brachycyrtus minor, n. sp. (PL 22, figs. 3, 3 a.) Obovate, rufo-piceous, the antennal club infuscate ; densely clothed with brownish- white scales, the elytra each with an interrupted, oblique, angulate fascia towards the apex and a small patch at the base fuscous, the prothorax and elytra also set with rather * This insect is given nine joints to the funiculus in the otherwise excellent figure. 51—2 398 PERCY SLADEN TRUST EXPEDITION long, curled, decumbent, whitish setse, the legs and antennae closely setulose ; the surface densely, finely punctate. Rostrum concave and canaliculate, deeply triangularly excised at the tip, the scrobes narrow, parallel. Antennas stout, joint 1 of the funiculus much stouter than those following, 3 — 7 transverse, the club moderately large. Eyes finely facetted, not prominent. Prothorax strongly transverse, feebly rounded at the sides, scarcely narrower at the apex than at the base. Elytra ovate, very convex, obliquely narrowed anteriorly, and at the base not wider than the prothorax ; with regular rows of conspicuous, rather coarse punctures, the interstices somewhat convex. Legs moderately stout, the tarsi broad. Length (includ. rostr.) 2|, breadth 1-J mm. Log. Aldabra : Takamaka (Fryer). One specimen, found in November or December 1908, possibly an introduction from Madagascar? Much smaller than B. setofasciatus, Fairm. (length 5 — 6 mm.), the pro- thorax and elytra more even, the second joint of the funiculus smaller, the legs not so stout. The prothorax is apparently vittate down the middle, due to abrasion of the scales. Epirrhamphus, n. gen. Rostrum excessively stout, short, about as long as the head, a little narrowed out- wards (with the head appearing subconical as seen from above), feebly emarginate at the apex, sulcate, the scrobes superior, distant from the margin, deep, as long as the eyes, subparallel on their inner edge and curved externally ; antennse moderately long, stout, inserted- near the tip of the rostrum, joints 3 — 7 of the funiculus transverse, the club ovate ; eyes finely facetted, moderately large, superior, rounded (oval as seen from above), not prominent ; mentum very small, leaving the maxillae and palpi exposed ; mandibular scars small ; prothorax transverse, truncate at the base and apex, narrow ; scutellum wanting ; elytra oval, broad ; anterior and middle coxae very narrowly, the posterior coxse widely, separated ; metasternum short, the episterna not visible ; ventral segment 2 much longer than 3 and 4 united, the latter very short ; legs stout ; femora unarmed ; tibiee sinuous within, the anterior and intermediate pairs unguiculate, the posterior pair widened at the tip, ciliate along their apical margin, and with the cavernous articular surface glabrous ; tarsi with joint 3 bilobed, pubescent beneath, the claws small, connate at the base ; body obovate, densely squamose throughout, apterous. Type, E. litoralis. This genus appears to be not uncommon on the coasts of Aldabra and Farquhar, and may be expected to occur further south in Madagascar. The type is not unlike a Strophosomus or Cneorrhinus. The superiorly placed scrobes and eyes (the head and rostrum together appearing subconical as seen from above, and the outer portion of the former distinctly extending beyond the eyes) separate Epirrhamphus from Ellimenistes and other described African forms. It may be placed near Hadrorhinus, Schonh. 4. Epirrhamphus litoralis, n. sp. (PL 22, figs. 4, 4 a.) Piceous, densely clothed with small cinereous or brownish scales, the prothorax CHAMPION— COLEOPTER A ; CURCULIONID^ 399 and elytra often darker on the disc, the prothorax sometimes fusco-trivittate and the elytra with a very large, common, laterally angulate space mottled with the same colour, the outer limits of this space being traceable or indicated by a few streaks in several of the light-colour-ed individuals ; the surface also thickly set with short, curled, adpressed setas, which are very conspicuous on the legs and antennie ; above and beneath very densely, finely punctate. Head and rostrum hollowed and sharply grooved down the middle, the inter-ocular space thus appearing raised on each side, the outer margins of the former narrowly extended beyond the eyes when the insect is viewed from above. Prothorax rounded at the sides, a little narrower at the apex than at the base. Elytra convex, with nine regular rows of conspicuous, moderately coarse punctures, the interstices broad and almost flat. Intermediate tibise in ^ strongly, in ? more feebly, unguiculate. Length (includ. rostr.) 31 — 5, breadth 1| — 2| mm. Loc. Aldabra: 1907 (Thomasset); XII. 1908 (Fryer). Cosmoledo: 1907 (Thomasset). Farquhar Atoll : 1905 (Gardiner). Numerous examples, varying in the colour of the vestiture, the dark patch on the elytra and the prothoracic vittse sometimes wholly wanting and the scales uniformly cinereous. A single specimen only was found on Cosmoledo. The individuals with strongly unguiculate middle tibiae are assumed to be males. Sect. Otiorrhynchinse Alatse. Cratopus. ■^Cratopus Schonherr, Cure. Disp. Meth., p. 120 (1826) ; Gen. Cure, ii. p. 46. A large number of species of this genus have been described, mostly from Mauritius (He de France), Bourbon (Reunion), the Seychelles and adjacent islands, S. Africa, and India. The abundant material obtained by Mr Hugh Scott, Mr Gardiner, and other collectors, in the islands under investigation, shows that there are two common variable types present — one peculiar to the coasts, the other confined to the mountain forests, — and, in addition, a rare, peculiar endemic form in the mountains of Mahe. The former have been described under various names, and it is perhaps convenient to give some of them specific rank, if localized on particular islands. It may be stated that the genitalia of each of them have been examined and no structural differences found, even between such dissimilar species as C. adspersus and C. muficus. Several of these local forms are represented in the British Museum by specimens received in 1870, as from "Round Island," which is assumed in their register to be the island of that name a little to the north of Mauritius, whereas the Round Island of the Seychelles is probably the correct locality for these insects*. In addition to the species here enumerated, Fairmaire (Bull. Soc. Ent. Fr. 1891, p. xlvi) mentions one other, C humeralis, Boh., from the Seychelles, probably in error. * The very fine Tenebrionid, Dysceladus tubercidatus, C. O. Waterli., from " Round I., Mauritius," has been found in abundance in 1905 on Frigate I. in the Seychelles. 400 PERCY SLADEN TRUST EXPEDITION The forms here dealt with may be distinguished thus : a. Anterior femora dentate. a}. Scutellum squamose. a". Eyes depressed, oval ; surface-vestiture fine, hair-like, at most condensed into a few small spots on the elytra adspersus, 0. O. Wat. [Amirantes, &c.]. h". Eyes moderately prominent, oval ; surface-vestiture coarser, the scales less elongate, oblong-oval on the elytra, and condensed into numerous patches on the latter ... ... ^riseovesfz^ws, Linell [Seychelles], c^. Eyes very prominent, rounded, coarsely facetted ; surface-vestiture much as in C. griseovestitus ... ... viridisparsus, Fairm. [Aldabra]. &'. Scutellum bare and shining. d^. Femora and tibiae rufescent ; the depressions of the upper surface, including the coarse seriate punctures on the elytra, thickly clothed with metallic golden-green, golden, or blue scales aurostriatus, Fairm. [Seychelles], e". Femora and tibiae black ; the depressions of the upper surface very sparsely squamose, the scales less metallic, at most clustered into a few scattered patches. al Elytra without submarginal line of white scales segregatus, n. sp. [Silhouette]. If. Elytra with a sharply-defined, interrupted, submarginal line of white scales ... ... ... segregatus, wax. subcinctus n.\VTcsi^iVL\. h. Anterior femora unarmed ; scutellum bare ; surface-vestiture dense, except along the bare raised elytral interstices ... ... muticus, n. sp. [Mahe]. 5. Cratopus adspersus. (PL 22, fig. 5, ?.) Cratopus adspersus C 0. Waterhouse, Rep. Zool. Coll. "Alert," p. 576 (1884). Loc. Amirantes: Eagle Island (Mus. Brit.); Desroches, Poivre and D'Aitos Islands, 1905. Chagos Islands, 1905 ; Egmont, Salomon, and Peros Banhos Atolls. Coetivy, 1905. Seychelles : Bird and Dennis Islands, 1908 (Fryer). Farquhar Atoll, 1905. Cargados Carajos : Establishment Island, 1905. Aldabra : 1907 (Thomasset), 1908 (Fryer). Astove : 1907 (Thomasset). Cosmoledo : 1907 (Thomasset). Assumption : 1909 (Dupont). A veiy long series of this insect has been obtained by Messrs Gardiner, Thomasset, Dupont, and Fryer in the coral-islands and atolls above quoted. None were obtained from the coasts of the mountainous granitic islands of the Seychelles group. The type was from Eagle Island, where it has also been found by Mr Gardiner. C. adspersus is distinguishable from the other very similar coast-forms by the oval, depressed eyes, the closer and finer granulation of the prothorax and elytra, and the more elongate and hair-like scales on the upper surface, this being particularly noticeable on the head and prothorax. The vestiture, too, is more uniformly distributed, at most condensed into CHAMPION— COLEOPTERA ; CURCULIONID^ 401 very small scattered spots on the elytra. The scales are often cupreous, golden, greenish, or bluish-grey, sometimes cinereous, as in the type. The length varies from 6 — 11, and the breadth from 2^ — i^ mm. 6. Cratopus griseovestitus. (PI. 22, fig. 6, $.) Cratopus griseovestitus Linell, Proc. U. S. Nat. Mus., xix. p. 697 (1897) ; Kolbe, Mitteil. Zool. Mus. Berhn, v. p. 41 (1910). Cratopus sparsutus Fairm., Ann. Soc. Ent. Belg., xlii. p. 485 (1898). Loc. Seychelles : Mahe (1905 and 1908—9), Silhouette (VIII. 1908), Praslin (1905) ; Bound Island (Mus. Brit.). This is exclusively a coast-species, living upon bushes such as Tournefortia argentea which grow just behind the beach*. It was found at several places in Mahe (Bale Lazare, and the coast near Cascade), and a number of specimens were obtained in two islets (Long Island, VII. 1908, and Anonyme Island, I. 1909) lying ofi' the coast of the main island. . In Silhouette it was met with at various parts of the coast. The types of both Linell and Fairmaire were from Mahe, whence I have seen upwards of 60 examples collected by Messrs Gardiner and Scott, as well as 19 from Silhouette, three from Praslin, and four from Bound Island. C. griseovestitus is a form of C. adspersus with more convex eyes, coarser and more scattered granules on the prothorax and elytra, and less elongate, broader scales on the upper surface, these being usually condensed into numerous small definite patches on the elytra. The insect seems to be a little more elongate than C. adspersus, especially the male, and to have a relatively longer basal joint to the funiculus. The surface-vestiture is variable in colour, often more or less metallic. Kolbe also records C. griseovestitus from Silhouette and Praslin. 7. Cratopus viridisparsus. Cratopus viridisparsus Fairm., Bull. Soc. Ent. France, 1896, p. 222; Linell, Proc. U. S. Nat. Mus., xix. p. 702 (1897). Loc. Aldabra: Takamaka, Picard Island, &c., 1908 (Fryer); 1907 (Thomasset). The description of C. viridisparsus would apply to similarly-coloured varieties of either of the two forms obtained by Messrs Thomasset and Fryer in Aldabra : one with oval, depressed eyes (C. adspersus), the other (C. viridisparsus, Fairm.) with the eyes coarsely facetted, more rounded, and strongly convex. M. Lesne, however, who has been kind enough to compare one of our examples with the latter, assures me that it agrees with Fairmaire's type. The eyes in the present species are even more prominent than they are in C. griseovestitus. The vestiture is equally variable in colour, and condensed into numerous small patches on the elytra ; but it is nearly as fine and hair-like as in C. adspersus. Of the 93 examples before me from Aldabra, 21 have depressed, and 72 prominent, eyes. Linell says Dr Abbott obtained two examples there. * There is little doubt that the two species found in the coral-islands (C adsperstcs and viridisparsus) are obtained in the same way, though I have no personal experience in their cases. — H, Scott, 402 PERCY SLADEN TRUST EXPEDITION 8. Cratoptis aurostriatus. CratO'pus aurostriatus Fairm., Bull. Soc. Ent. France, 1892, p. cli ; Kolbe, Mitteil. Zool. Mus. Berlin, v. p. 41 (1910). CratoiMS parcesquamosus Fairm., Bull. Soc. Ent. France, 1893, p. cccxxiv ; Kolbe, loc. cit. Cratopus abhotti Linell, Proc. U. S. Nat. Mus., xix. p. 704 (1907). Femora and tibife rufous ; the depressions of tbe upper surface each with a small dense cluster of rounded, golden-green, blue, or golden scales, the elytra sometimes with a dense irregular or interrupted submarginal stripe of carneous or whitish scales similar to that along the sides of the body beneath ; the elytra coarsely and regularly striate- punctate, the interstices feebly transversely plicate. Loc. Seychelles : Mahe ; 1888 (Lister) ; (Brauer) ; 1905 ; 1906 (Thomasset) ; 1908—9 : Cerf Island, 1906 (Meade-Waldo) : Praslin, 1905 : F^licite, XII. 1908 : Round Island (Mus. Brit.). Glorioso Island (Abbott). Madagascar. Var. Femora and tibise piceous or rufo-piceous, the femora sometimes sparsely viridi-squamose between the scattered hairs ; the prothorax closely granulate, and the elytra strongly transversely plicate, the irregular depressions of the surface clothed with golden-green or blue scales, sometimes with golden or carneous scales intermixed. Loc. Seychelles: Mahe, 1908 — 9; Marie Anne Island, 1908; Round Island (Mus. Brit.). This species' was found by Mr Scott to be abundant in a number of localities in the mountain forests of Mahe, whei'e it was beaten from various dicotyledonous trees. C. auro- striatus occurred up to the highest parts of the mountains, and has also been taken nearer sea-level in two islets (Cerf Island and Long Island) lying off the coast of Mahe. It has also been met with in several more distant islands of the Seychelles, i.e. Praslin, Felicite, and Marie Anne, but it is noteworthy that no specimen is recorded from Silhouette. It is considered by some people to be an introduced insect, possibly responsible in part for the destruction of endemic " Capucin " {Northea) trees. Fairmaire gives simply " Sey- chelles " for it. His C. parcesquamosus is based on an abraded example of the same species. The tarsi in fresh specimens are often clothed above between the long white hairs with narrow blue scales, but no reliance can be placed on this character. The male has the prothorax more rounded at the sides, and relatively broader, than the female ; the anterior legs more elongated, and the femora still more robust ; and the anterior cox?e thickly clothed with long white hairs. The two specimens from Felicite Island have the scales of the upper surface golden-cupreous and the whitish submai^ginal stripe well developed. The variety with strongly plicate elytra and irregulai-ly distributed confluent patches of scales is represented by five examples only. We are indebted to M. Lesne of the Paris Museum for the loan of a co-type of each of Fairmaire's species. 9. Cratopus segregatus, n. sp. Elongate, subfusifoi-m, shining, black, the antennae piceous or ferruginous ; above CHAMPION— COLEOPTERA ; CURCULIONID^ 403 clothed with minute, widely scattered, whitish or pale green scales, which are sometimes here and there condensed into a small patch on the depressions, especially towards the sides, the lower surface with scattered whitish hairs ; the elytra with a transverse space on each side of the scutellum, the intermediate and posterior femora with a patch towards the apex in front, and an interrupted stripe along the sides of the body beneath (sometimes reduced to one or two spots), clothed with larger carneous or whitish scales ; the tarsi with narrow blue scales intermixed with the long white hairs above. Head very sparsely punctate, narrowly foveate between the eyes, the latter very large, oval, de- pressed, finely facetted ; rostrum rather narrow, flattened, feebly convex at the apex, sparsely punctate, obliquely carinate on each side anteriorly ; joint 2 of the funiculus a little longer than 1. Prothorax transverse, constricted and much narrowed in front, strongly rounded at the sides in $, narrower, subconical, and with the sides subparallel at the base in ? ; coarsely, confusedly punctate, the interspaces becoming granulate towards the sides, the disc obsoletely canaliculate posteriorly. Scutellum small, smooth, bare. Elytra long, very much wider than the prothorax, acuminate at the apex, granulate at the sides below the humeri; the outer margin serrulate towards the tip, the apices mucronate, the humeri obliquely truncate ; coarsely striato-punctate, the interstices broad, feebly transversely plicate, and also sparsely punctate, the punctures each preceded by a minute granuliform prominence. Beneath closely transversely strigose and sparsely, finely, granulato-punctate, the flanks of the prothorax coarsely granulate. Anterior coxse thickly clothed with long white hairs in $, Anterior femora strongly clavate, enormously thickened in fully-developed $, and armed with a small tooth. Anterior tibiae sparsely denticulate. Length (includ. rostr.) 9 — 15, breadth 3 — 5^ mm. (,??). Log. Seychelles: Silhouette, 1908. Var. suhcinctus, n. (PI. 22, fig. 7, $.) The elytra with an interrupted submarginal stripe (similar to that along the sides of the body beneath), and a small patch at the base of each dorsal interstice, densely clothed with rounded carneous or white scales, the disc sometimes with a few small patches of similar scales ; the intermediate and posterior femora with a few intermixed narrow blue scales towards the apex, the patch of larger white scales wanting. Log. Seychelles: Praslin ; 1905; 1906 (Meade- Waldo) ; XI— XII. 1908: Pound Island (Mus. Brit.). This insect and its variety are forms of C. aurostriatus that require distinctive names. The one selected as typical of C. segregatus is abundant in Silhouette, in the same way that C. aurostriatus is in Mahe ; it was beaten from bushes and trees in the mountain-forests, and some specimens also were obtained at lower levels : its variety suhcinctus inhabits similar places in Praslin, where typical C. aurostriatus also occurs. C. segregatus simply differs from C. aurostriatus in having black legs, and the vestiture of the upper surface greatly reduced, even in fresh examples, the minute scales being clustered, at most, into a few patches in the depressions of the elytral surface and extending over the interstices. SECOND SERIES— ZOOLOGY, VOL. XVI. 52 404 PERCY SLADBN TRUST EXPEDITION 10. Cratopus muticus, n. sp. (PL 22, fig. 8, ^.) Elono-ate, rather narrow, fusiform ; nigro-piceous or piceous, the antennse, femora, and tibi* rufo-piceous or ferruginous ; thickly clothed, except upon the raised portions of the upper surface, with small, rounded or oval, pale brown, carneous, or whitish scales, sometimes with pale greenish scales intermixed on the humeri, or along the suture and outer interstices of the elytra, on the coxse, and along a broad space down the middle of the under surface ; the legs and a space down the middle beneath sparsely clothed with lono- white hairs, the tarsi with intermixed narrow bluish or green scales above, and the femora also with a few oval greenish scales. Head very sparsely punctate, narrowly foveate between the eyes, the latter very large, oval, moderately prominent, and finely facetted ; rostrum a little longer than broad, rather narrow, without marginal carina. Prothorax transverse, rounded at the sides, narrowed and constricted anteriorly ; con- fusedly punctate and coarsely granulate, the vestiture becoming longer, denser, and transversely arranged along the sides. Scutellum small, shining, bare. Elytra very much wider than the prothorax, elongate, widened posteriorly in $, compressed and strongly acuminate at the apex, granulate at the sides below the humeri, the latter obliquely truncate, the outer margin serrulate towards the tip, the apices mucronate; with rows of coarse punctures, separated by raised, subgranulate or interrupted, glabrous interstices, the intervening depressed spaces being densely squamose. Beneath closely transversely strigose and sparsely granulato-punctate. Legs very elongate, rather slender ; anterior femora unarmed ; anterior and intermediate tibiae very strongly, and the posterior tibise feebly, unguiculate in $, the uncus on the middle pair short, and that on the posterior pair wanting, in $. Length (includ. rostr.) 10— 11|, breadth 3—3^ mm. {$^). Log. Seychelles : Mahe. Ten specimens were obtained ; one by Gardiner in 1905 ; one by Thomasset in 1906 ; and eight by Scott in 1908 — 9, at the following localities : near Morne Blanc, ca. 1000 feet, XL 1908; Cascade Estate, IL 1909; forest on summit of Montague Anse Major, ca. 2000 feet, IL 1909 ; Mare aux Cochons district, over 1000 feet, L 1909. It was found but rarely, by beating, and it appeared to be usually, if not always, beaten from the endemic "Capucin" tree [Northea seychellarum). C. muticus differs from all the species described by Boheman by the unarmed anterior femora. It is a rather slender, elongate form, with densely squamose body, the elytral interstices being raised and bare. Group Hylobiina. Sub-fam. Curculioninae. Cycloterodes. Cydoterodes Kolbe, Mitteil. Zool. Mus. Berl., v. p. 44 (1910). The following additions to Kolbe's diagnosis of this genus are required : " Anterior coxae subcontiguous ; presternum very deeply emarginate at the apex, and broadly CHAMPION— COLEOPTERA ; OURCULIONID^ 405 depressed down the middle ; eyes large." The excavate prosternum of Cycloterodes is suggestive of the Cryptorrhynchina, but the rostrum is free and does not even rest upon the subcontiguous anterior coxee in repose. There is an insect from Ceylon in the British Museum, standing under the MS. name Cycloteres rugulosus, Dohrn, that belongs to the same genus. The type is a large apterous insect, with the surface densely coated with minute earthy-looking scales, and also set with short erect setae. 11. Cycloterodes sechellarum. (PI. 22, figs. 9, 9 a, $.) Cycloterodes sechellarum Kolbe, Mitteil. Zool. Mus. Berl., v. p. 44 (1910). Loc. Seychelles : Silhouette, Mahe. Described from a single example from Silhouette. Mr Scott found a long series of it in Silhouette, and one in Mahe. In the former island it was found in numbers at the Mare aux Cochons plateau, at an elevation of 1000 feet, at night, crawling on the palm- lath hut-walls, or on the trunks of some Jack-fruit trees near by, often in wet weather. Kolbe's description must have been made from a dirty specimen, as he does not mention the numerous tuberculiform prominences scattered along the elytral interstices, some of which are clothed with black scales, two at the base of each elytron (like the two on the anterior portion of the prothorax) being conspicuous ; the elytra, too, have each two or three dirty-white transversely-placed spots at about one-third from the tip. The rostrum of the female is bare at the apex, and less convex and more feebly carinate above than in the male. The first ventral segment of the male is very broadly, feebly depressed. EUCYCLOTEBES, n. gen. Rostrum strongly deflexed, resting on the anterior coxae in repose, short, very stout, slightly widened outwards, the scrobes very deep, superiorly placed, extending forwards to the apex above and running obliquely downwards to beneath the eyes posteriorly, the antennae inserted near the tip ; mandibles dentate within, without scar, visible beyond the tip of the rostrum when closed ; mentum very small, transverse ; eyes oval, transverse, moderately large, separated by the width of the rostrum, incompletely hidden in repose ; antennae with 7-jointed funiculus, joints 1 and 2 elongate, the others short and moniliform, the club ovate, the scape reaching the eyes ; prothorax with its broadly rounded base accurately fitted to that of the elytra ; scutellum wanting ; prosternum deeply arcuate- emarginate in front, unimpressed, the anterior portion extremely short ; anterior coxae subcontiguous, the intermediate coxae moderately, the posterior coxae very widely, separated ; metasternum extremely short, without visible episterna ; ventral segments 1 and 2 connate, 2 less than half the length of 1, 3 and 4 extremely short, the first suture sinuate, the others straight ; legs robust ; femora dentate ; tibiae angularly dilated at the middle within, unguiculate at the inner apical angle, and with a short tooth on the inner side near the apex ; tarsi stout, spongy-pubescent beneath, joint 1 triangular, 2 transverse, 3 broadly bilobed, narrowly emarginate for the reception of the claw-joint, the claws free ; body robust, subrotundate, Erodiiform, densely coated with minute earthy-looking scales, apterous. 52—2 406 PERCY SLADEN TRUST EXPEDITION Type, E. terreus. The insect forming the type of this genus has the general appearance of such aberrant Cryptorrhynchids as Hyhomorphus and Ocladius, but it is in reality related to Cycloteres. The regularly rotundate shape is suggestive of the Tenebrionid genus Erodius. The anterior portion of the prosternum is extremely short, thus allowing the rostrum to rest on the anterior coxse in repose. Achynius, Fairm., from Madagascar, may be an allied form. 12. Eucydoteres terreus, n. sp. (PL 22, figs. 10, 10 a.) Very broad, rotundate-ovate, opaque, black, the antennse and tarsi rufo-piceous ; the entire surface covered with minute brown or reddish-brown scales and also minutely setulose, the legs and antennge with more conspicuous setse. Rostrum bare at the tip, when denuded of scales shining, closely, finely punctate, and 4-carinate from the base to near the apex. Head, prothorax, and elytra densely, extremely minutely punctulate, the prothorax with intermixed scattered moderately coarse punctures. The elytra with regular rows of foveee placed in shallow striae, the interstices broad and very sparsely, obsoletely granulate. Beneath coarsely punctate. Length (exclud. head) 5 — 6f , breadth 3| — 5^ mm. Loc. Seychelles : Silhouette, Mahe, Praslin. Six examples, sex not ascertained. In Silhouette this species was found in the forest above Mare aux Cochons, IX. 1908 : in Praslin, in the " Coco-de-mer " forest in the Yallde de Mai, Cotes d' Or Estate, XL 1908: in Mah^ in the Mare aux Cochons district, ca. 1500 feet, L— IL 1909. GONOTRACHBLUS, n. gen. Rostrum very stout, curved, as long as the prothorax, the apical portion slightly widened and parallel-sided, the antennse inserted beyond the middle, the scrobes deep and obliquely descending to the lower surface ; head globose, constricted behind the eyes, the latter small, superior, coarsely facetted, and placed at the base of the rostrum ; antennse (fig. 116) with a short 5 -jointed funiculus and a small, ovate, pubescent club; prothorax subquadrate, sharply carinate ; scutellum wanting ; elytra broad, oval, produced at the apex ; anterior coxae contiguous ; posterior coxse very widely separated, the intercoxal process truncate in front ; metasternum short, the episterna covered by the elytra ; ventral segments 1 and 2 iong, connate at the middle, 3 and 4 short, together as long as 5, the first suture sinuate and the others straight ; tibise sinuate within, armed with a slender claw at the outer apical angle ; tarsi very short, spongy-pubescent beneath, joint 3 bilobed, the claws minute, free ; body oblong, convex, subglabrous, apterous. Type, G. quinquecarinatus. The insect from Long Island, Mahe, from which the above characters are taken may be described as a Gononotus (Lee.) with the antennal structure, i.e. a 5-jointed funiculus, of Dryotribus Horn ( = Thalattodora, Perkins). Both these genera have been referred to Cossonina, but Gonotrachelus (and Gononotus also) seems to me to be better placed CHAMPION— COLEOPTERA ; OURCULIONID^ 407 amongst the Hylobiina, near Styphloderes. All these insects occur on the sea-shore, and appear to be easily introduced in drift-wood, &c. Gononotus has been recorded from Florida and Cuba, and Dryotribus from Florida, the Antilles, the Hawaiian Is., Adele Island (N.W. Australia), and Nyew-tew Island, China. Gonotrachelus, therefore, may have been introduced into the Seychelles, but from whence it is impossible to say at present. 13. Gonotrachelus quinquecarinatus, n. sp. (PI. 22, figs. 11, 11a, b.) Oblong-ovate, opaque, piceous, the antennse ferruginous. Head and rostrum rugosely punctate; antennge short, the joints of the funiculus comparatively stout, 2 — 5 transverse. Prothorax subquadrate, about as broad as long, abruptly constricted anteriorly; very coarsely, confluently punctate, and sharply 5-carinate, the two outer carinse on each side sinuous, becoming divergent anteriorly, the outer one marginal and foTming a blunt tooth at its point of termination. Elytra much wider than the prothorax, oval, truncate at the base, the humeri obtuse ; coarsely punctate-striate, the interstices narrow and more or less costate, 3, 5, and 7 sharply raised. Beneath coarsely, closely punctate, the interspaces alutaceous. Length 2 — 2-^ mm. Loc. Seychelles : Long Island, near Mahe, VII. 1908. Two specimens, probably male and female. Group Anchonina. Anclionina Champion, Biol. Centr.-Am., Coleopt., iv. 4, p. 66 (1902). Faust (Deutsche ent. Zeit. 1892, p. 19) referred numerous American genera to this group and others from the same continent were subsequently added by myself Cydoterinus, Kolbe, has the head, &c., formed exactly as in these American forms — Kolbe, in fact, notes its resemblance to Oncorrhinus, — and the genus is much better placed in Anchonina than in Hylobiina. The group is represented in the Seychelles by two genera. All the species are apterous, and in one, Cydoterinus ccecus, the eyes are wanting. C.foveatus is not unlike the American genus Theognete, which has the eyes placed on the sides of the rostrum, instead of on the smooth, globose, retractile head. Mr Scott notes that he obtained all his material, with the exception of one species (C. carinifer), from the forest-clad mountains, from amongst dead leaves on the ground. The largest form, Tanyomus palmicola, was found exclusively on the concave inner surfaces of the bases of damp decaying palm-leaves. The larger forms of Cydo- terinus (such as C. foveatus and C humeroalatus) were also often found in similar situations on dead palm-leaves, but some of them may also have been on leaves of dicotyledonous trees. The smaller Cydoterinus (e.g. C. unicristatus) were found on leaves of the " Bois Rouge" {Wormia ferruginea) and of the "Capucin" {Northea Sechellarum), both endemic trees. The one exception mentioned above (C carinifer) was not found on the ground at all, but in decaying outer leaf-bases of a growing Lodoicea-'psilm. 408 PERCY SLADEN TRUST EXPEDITION The small forms of Gycloterinus are very difficult to see on the dead Wormia and Northea leaves, owing to their flattened form and cryptic coloration. They are frequently found sitting on the sides of the raised midrib and other veins of the "Bois Rouge" {Wormia) leaves. They did not appear to be abundant in Silhouette in the season of the S.E. Trade-winds (July — September 1908). Several species were found in that island, but only in small numbers : [a specimen of one of them ((7. ampliatus) was bred from a larva found in the rotting substance of the base of a fallen palm-leaf J. These insects were abundant in the forests of Mahe in November and December 1908, and it was then that the great series of some species (e.g. C unicristatus) were principally accumulated. Examples were frequently found in coitu on the dead leaves. They were much scarcer again in the forests behind Cascade in January and February 1909. It was several times observed that there were, in the sides of the midribs of the leaves, little holes each surrounded by a tiny pile of leaf-substance reduced to dust ; and it is possible that these were the work of the small forms of Cycloterinus, which are probably connected with the dead leaves throughout their life-cycle. (Cf Scott, " Eight Months Entomological Collecting in the Seychelles Islands," Vol. xiv. of these Transactions, 1910, pp. 29 — 30.) Tanyomus, n. gen. Head globose, polished, the eyes small, depressed, transverse, placed low down imme- diately behind the base of the rostrum; rostrum arcuate, long in $, shorter in $, constricted at the base, the antennse inserted near the tip, the scrobes inferior, deep, extending to beneath the eyes ; funiculus 7-jointed, joint 1 elongate, the others decreasing in length ; prothorax subglobose, constricted near apex ; scutellum wanting ; elytra subscutiform, the humeri acutely produced anteriorly ; prosternum bituberculate between the rather narrowly separated anterior coxse, the anterior portion long ; metasternum very short, without visible episterna ; ventral segments 1 and 2 long, connate, 3 and 4 together longer than 5, the sutures straight ; femora unarmed ; tibise straight on their outer edge, each with a curved hook at the apex arising from near the outer angle, the anterior pair broadly produced inwards at the apex and with a short tooth at the inner angle in both sexes ; tarsi clothed with long projecting hairs, spongy- pubescent beneath, joint 3 with two narrow divergent lobes of unequal length, the claws long and divergent ; body apterous, setose, elongate, subfusiform. Type, T. palmicola. The remarkable insect forming the type of this genus is not unlike a large black Erirrhinus. The anteriorly produced spiniform humeri make the elytra appear conjointly arcuate-emarginate at the base. The rostrum is longer, stouter, and more rugose in the male than in the female. The bituberculate prosternum and the asymmetrically lobed thixd tarsal joint are also characteristic, the last-mentioned character, however, is also to be found in two species of Cycloterinus, to which the present genus is nearly related. CHAMPION— COLEOPTERA ; CURCULIONID^ 409 14. Tanyomus palmicola, n. sp. (PL 22, figs. 12, 12 a, $.) Rather broad, moderately shining, black or pitchy-black, the tarsi and antennae ferruginous or obscure ferruginous ; the pro thorax, rostrum, and legs setulose, the elytra with scattered, long, erect, stiff, fulvous setse intermixed towards the sides and apex with minute, short, adpressed hairs, the antennae sparsely pilose, the pro- jecting hairs on the tarsi fulvous. Rostrum {$) stout, strongly arcuate, longer than the prothorax, dull and shallowly punctate above, and with two small tubercles at the apex beneath, (?) shorter and more slender, shining, closely punctate ; the lateral portions sulcate and carinate in both sexes. Prothorax about as broad as long, the short anterior lobe narrow ; coarsely, closely punctate, the punctures coalescing into oblique or sinuous rugse towards the sides and base. Elytra much wider than the prothorax, moderately elongate, transversely convex, depressed at the base, the acutely produced humeri raised ; with rows of rather scattered coarse punctures placed in almost obsolete striae, the interstices feebly convex and with the setigerous punctures extremely minute. Beneath shining, coarsely, closely punctate, the punctures becoming finer towards the apex, the second ventral segment transversely tumid at the base in both sexes. Length 51— 6i breadth 2^—3 mm. ( ??). Log. Seychelles : Mahe. Twelve specimens, found in the high forests of Morne Blanc and Pilot (XI. 1908), and between Trois Freres and Morne Seychellois (1500 — 2000 feet, I. 1909), on the concave inner sides of the bases of damp decaying palm-leaves on the ground. Cycloterinus. Cydoterinus Kolbe, Mitteil. Zool. Mus Berl., v. p. 41 (1910). Three species from the Seychelles were referred to Cycloterinus by Kolbe, of which C. foveatus may be taken as the type. These forms and various others were found by Mr Scott in the same islands, some of them in great abundance. They vary greatly inter se in the development of the rostrum in the male (it being much longer in this sex than in the female in two of the species described by Kolbe), the emargination of the apex of the prosternum, the extent of separation of the anterior coxae, the width of the third tarsal joint, and the size of the tarsal claws. They agree, however, in having the head small, globose, and shining ; the eyes transverse, oval, depressed, and placed low down immediately behind the base of the rostrum, showing a gradual diminution in size till in one species (C ccecus) they are wanting; the tibiae unguiculate at the apex ; the ventral segments 1 and 2 long and connate, 3 and 4 extremely short, the sutures straight ; the metasternum very short, without visible episterna ; the elytra connate, in some of the species with the humeri dentiform or abruptly laminato- explanate; the wings wanting. 410 PERCY SLADEN TRUST EXPEDITION a. Third tarsal joint with asymmetrical lobes ; rostrum longer in $ than in $ ; prothorax subquadrate, 4-tuberculate ; elytra tuberculate and with abruptly dilated laminiform humeri ; eyes present ; body setulose. a\ Prothorax not granulate ; elytra not margined laterally, humeri angulate or subangulate in front .. ... ... ... ... hwmeroalatus. b\ Prothorax granulate ; elytra margined laterally, humeri rounded amjMatus. b. Third tarsal joint with symmetrical lobes, simply excavate above in the smaller forms. c\ Eyes present. a^. Body glabrous ; prothorax subquadrate ; elytral humeri not prominent ; rostrum about equal in length in the two sexes. a^. Prothorax salcate, 4-tuberculate; elyti-a irregularly foveate; third tarsal joint bilobed ; eyes rather large ; second ventral segment with a stout tubercle in ^ foveatus. b\ Prothorax 5-costate ; alternate elytral interstices interruptedly costate ; eyes small; third tarsal joint feebly bilobed . . ... carinifer. cl Prothorax canaliculate; alternate elytral interstices uninterruptedly costate; eyes small ... ... ... ... ... canaliculatus. b^. Body setulose; third tarsal joint small, feebly lobed or excavate. d^. Prothorax subquadrate ; elytral humeri dentiform ; eyes small. a^ Elytra subcordate or subglobose. al Alternate elytral interstices simply raised, the first (sutural) with a setigerous tubercle beyond middle in ^ ... unicristatus . ¥'. Alternate elytral interstices interruptedly costate or tuberculate erosus. b^. Elytra convex, subglobose, alternate interstices interruptedly costate sphceropterus. e\ Prothorax more rounded at sides ; elytra short-oval, convex, humeri not prominent: species very small ... ... ... microphthalmus. d}. Eyes wanting ; prothorax elongate, with long, cucuUate, anterior lobe ; elytra oval, humeri not prominent ... ... ... ... cceeus. 15. Cycloterinus humeroalatus. (PL 22, figs. 13, 13 a, $.) Cycloterinus humeroalatus Kolbe, Mitteil. Zool. Mus. Berl., v. p. 42 (1910). Log. Seychelles: Mahe, Silhouette. Mahe : a large number of specimens ; high damp forest of Morne Blanc and Pilot, X. — XL 1908 ; high damp forest between Trois Freres and Morne Seychellois, 1500 — 2000 feet, XII. 1908 and I. 1909; forest above Cascade Estate, I. 1909; Mare aux Cochons district, 1000—2000 feet, L— 11. 1909; forest on summit of " Montague Anse Major," ca. 2000 feet, II. 1909. Silhouette: only two specimens, from forest near Mont Pot-a-eau, ca. 1500 feet, VIII. 1908. The types of this species were found in Mahe by Herr A. Brauer, beneath leaves on the ground hi the high forests, at an elevation of 600 — 750 metres. Mr Scott CHAMPION— COLEOPTERA ; CURCULIONID^ 411 has found it in abundance, in similar situations, in the same island. Fully developed males have the elytral tubercles developed into long conical processes at the commence- ment of the apical declivity (the two on each elytron forming with those on the opposite wing-case a transverse row), these tubercles in undeveloped specimens of the same sex being reduced to small oblong prominences, as in the female. The humeral laminiform prominences of the elytra vary in development in a similar way. The rostrum of the male is long, carinate, much swollen above beyond the middle, and opaque to near the tip ; that of the female is shorter, simply curved, carinate in its basal half above, and shining throughout. The first ventral segment of the male is transversely excavate in the middle, and the second in fully developed examples is tumid in the centre behind. The upper surface of the body is somewhat thickly clothed with short stiff erect setse. The length varies from 3 — 4, and the breadth (at shoulders) from 1| — --2f mm. 16. Cycloterinus ampliatus. (PL 22, figs. 14, 14 «, $.) Cycloterinus ampliatus Kolbe, Mitteil. Zool. Mus. Berl., v. p. 43 (1910). Loc. Seychelles : Silhouette. Found by Herr A. Brauer in the forests of Silhouette, at an elevation of 400 — 500 metres. Mr Scott met with five examples of it in the same island, amongst dead leaves in the high jungle at about 1500 feet, and one was bred by him from a larva found in damp decaying leaf-bases of a palm on the ground ; these are all males. This insect differs from feebly tuberculate examples of C. humeroalatus in having the rostrum of the male much smoother and without median carina, and tumid above and beneath ; the prothorax more rounded at the sides, more closely and less coarsely punctate, with the interspaces more or less granulate, and the four transversely-placed tubercles less prominent, the two inner ones arising further backward ; the elytra sharply margined laterally, and with the laminiform humeral prominences rounded in front ; and the legs reddish. The second ventral segment of the male is simple. The upper surface is setulose as in C. humeroalatus. 17. Cycloterinus foveatus. (PL 22, figs. 15, 15 a, 6, $.) Cycloterinus foveatus Kolbe, Mitteil. Zool. Mus. BerL, v. p. 42 (1910). Loc. Seychelles: Mahe, Praslin. Mahe ; high forest of Morne Blanc, X. 1908; forest above Cascade Estate up to 1700 feet; Mare aux Cochons district, 1000 — 2000 feet, I.— II. 1909. The types of this insect were found in Mahe, on damp forest-clad slopes, at an elevation of 400 — 750 metres, and Herr A. Brauer is also stated to have taken it beneath leaves on the ground on the high land in Praslin. Mr Scott secured a very long series of it, especially in the forest on Cascade Estate in Mahe, but he did not meet with it in Praslin. C foveatus is readily distinguishable by its glabrous body, the very coarsely irregularly foveate elytra, and the prominent, posteriorly-directed, laminiform tubercle (fig. 15 &) on the second ventral segment of the male. The rostrum of the male is much swollen above at about one-third from the apex, and carinate down SECOND SERIES— ZOOLOGY, VOL. XVI. 53 412 PERCY SLADEN TRUST EXPEDITION the middle and opaque thence to the base ; that of the female is simply curved, shining, closely, finely punctate, and without median ridge. The length varies from 2f — 4 mm. 18. Cydoterinus carinifer, n. sp. (PI. 22, figs. 16, 16 a, $.) Oblong-ovate, robust, dull, glabrous ; nigro-piceous or black, the under surface piceous, the rostrum, antennse, and tarsi, and sometimes the tibiae and the base of the femora also, ferruginous or obscure ferruginous. Rostrum very stout in both sexes ; {$) with the lower portion dilated and shovel-shaped from about the basal third, and the upper portion opaque, carinate, and rugosely punctate to near the tip ; ($) simply arcuate, coarsely punctate, and more shining towards the apex. Eyes very small. Prothorax about as long as broad, subquadrate, the posterior portion transverse, feebly rounded at the sides and more or less angulate at each anterior angle, the tubulate anterior portion abruptly separated from the rest ; coarsely, confluently punctate, with a sharp carina running down the middle and a short stout ridge midway between it and a similar ridge above the anterior angle, the interspaces between these elevations sulciform. Elytra considerably wider than the prothorax, somewhat scutiform, the humeri obtuse ; with rows of oblong deep fovese, the interstices alutaceous, 3 — 6 strongly, the others more feebly, costate, the ridge on 3 interrupted at some distance before the apex, and that on 5 abruptly terminating at the commencement of the apical declivity. Beneath very coarsely, closely punctate. Third tarsal joint moderately dilated, excavate above. Length 2^— 3 mm. {$%). Log. Seychelles : Praslin. Two females and one male, found in the decaying outer leaf-bases of a growing " Coco-de-mer " (Zoc/o^cea sechellarum) in the Vallee de Mai, Nov. 28th, 1908. The carinate, quadrisulcate prothorax and the costate interstices of the elytra readily dis- tinguish C. carinifer. The rostrum of the male is similar to that of G. unicristatus. The presternum is arcuate-emarginate at the apex, and all the coxae are widely separated. 19. Cydoterinus canaliculatus, n. sp. (PL 23, figs. 17, l7 a, $.) Oblong-ovate, convex, opaque ; glabrous ; nigro-piceous or black, the under surface, rostrum, femora, and tibiae rufo-piceous or obscure ferruginous, the antennae and tarsi ferruginous. Rostrum in both sexes very stout, simply arcuate, finely punctate, and feebly striate laterally, opaque in $, shining in ?. Eyes very small. Prothorax longer than broad, the posterior portion subquadi'ate, with the sides rounded and more or less sinuate before the obtusely subangulate anterior angles, the tubulate anterior portion rather long and abruptly separated from the rest ; coarsely, confluently punctate, and with a shallow median groove. Elytra oval, much wider than the prothorax, convex, abruptly declivous behind ; seriato-foveate, the interstices alutaceous, 3 and 5 strongly, and 4 and 6 more feebly, costate. Beneath coarsely punctate ; ventral segment 1 broadly excavate down the middle in $. Presternum deeply arcuate-emarginate at the apex. Anterior coxae moderately separated. Third tarsal joint moderately dilated, excavate above. Length 3— 3^ mm. (^?). CHAMPION— COLEOPTERA ; CUROULIONID^ 413 Log. Seychelles : Mahe. Five specimens from the high damp forest : — Morne Blanc and Pilot, XI. 1908 ; between Trois Frferes and Morne Seychellois, 1500 — 2000 feet, XII. 1908; slopes of Morne Seychellois, 1500 — 2000 feet, II. 1909. Differs from C. carinifer in having the rostrum similarly shaped in the two sexes, the prothorax longer and simply canaliculate on the disc, the elytra more inflated and with the costse uninterrupted posteriorly, the presternum more deeply emarginate at the apex, and the anterior and intermediate coxge much less widely separated. 20. Cycloterinus unicristatus, n. sp. (PI. 23,- figs. 18, 18 a, <^.) Short, broad, shining ; varying in colour from black to ferruginous, the tarsi and the base of the antennae always rufo-testaceous ; clothed above with short, curled, semi-erect, fulvous or cinereous setge, which are condensed on the elytra into a conspicuous line along the rather prominent alternate interstices, the tubercle on each side of the suture in $ with a common tuft of longer erect hairs. Rostrum {$) very stout, arcuate, nearly as long as the prothorax, the lower portion dilated and shovel-shaped from near the base, the upper portion opaque, 7-carinate, and rugosely punctate to near the apex ; ($) arcuate, cylindrical, shining, finely punctate, and carinate at the sides only. Eyes very small. Prothorax transversely subquadrate, the tubulate anterior portion narrow, the posterior portion with the sides subparallel or feebly rounded and usually with a small tubercle at each anterior angle ; densely, rather coarsely punctate, without trace of median sulcus or carina. Elytra very broad, short, scutiform or subcordate somewhat flattened on the disc anteriorly in the larger specimens, the humeri obliquelj truncate in front and more or less angulate externally ; with rows of very coarse, closely-placed, transverse punctures, separated by shining, sparsely punctulate, raised interstices, the alternate interstices a little more prominent that the rest, the flrst (sutural) with a setigerous tubercle at the commencement of the apical declivity in $. Beneath closely, coarsely punctate ; first ventral segment depressed in the middle at the apex in $. Third tarsal joint feebly bilobed. Length 1|— 2i, breadth |— 1^ mm. (^$). Log. Seychelles: Mahe. This is an abundant insect in the high mountain-forests of Mahe, where it is found on damp decaying leaves of Wormia ferruginea and Northea seychellarum on the ground. It was obtained in the high forest of Morne Blanc and Pilot up to 2000 feet, X. — XL 1908; forest between Trois Freres and Morne Seychellois, ca. 1500—2000 feet, XII. 1908 and I. 1909 ; forest above Cascade Estate, up to 2000 feet, I.— in. 1909; Mare aux Cochons district, 1000—2000 feet, I.— II. 1909; forest on ^Summit of "Montague Anse Major," ca. 2000 feet, II. 1909. The very large number of specimens captured by Mr Scott vary greatly in size and colour. The male is easily recognizable by the tuft of erect hairs on the suture beyond the middle and the inferiorly dilated shovel-shaped rostrum. The larger castaneous examples are some- what thickly fulvo-setose, the smaller, more convex, blacker individuals having a shorter cinereous setosity, which, however, is partly hidden by an earthy exudation. 53—2 414 PERCY SLADEN TRUST EXPEDITION 21. Cycloterinus erosus, n. sp. (PL 23, figs. 19, 19 a, ?.) Short, opaque, glabrous ; piceous or nigro-piceous, the antennae and tarsi, and sometimes the rostrum, femora, and tibise also, ferruginous. Rostrum in both sexes very stout, arcuate, about as long as the prothorax, carinate along the middle and sides, seriato-punctate, and opaque to near the tip, in $ a little less curved and more shining towards the apex. Eyes very small. Prothorax nearly or quite as broad as long, the posterior portion transversely quadrate, slightly widened forwards to the obtusely angulate anterior angles, the tubulate anterior portion abruptly separated from the rest ; coarsely, confluently punctate. Elytra much wider than the prothorax, subtriangular, the humeri obliquely truncate in front ; seriato-foveolate, the interstices 3, 5, 7 each with a series of oblong, truncate, or subcorneal tubercles, which are sometimes partly confluent on the disc, those on 7 projecting beyond the margins of the elytra as seen from above, 4 and 6 also slightly raised. Beneath coarsely, closely punctate. Third tarsal joint moderately dilated, excavate above. Length 1^ — 2 mm. (^$). Loc. Seychelles : Mahe. Thirteen specimens, picked up one or two at a time, in the high forests of Morne Blanc and Pilot, and also found in the Mare aux Cochons district, and on the summit of " Montagne Anse Major." This insect has the general facies of a minute Brachycerus, the subconical or truncated tubercles on the elytra, which are soinetimes partly coalescent on the disc (forming interrupted ridges), projecting laterally beyond the margins. The presternum is unemarginate at the apex, and the anterior coxae are moderately separated. 22. Cycloterinus splicer opterus, n. sp. Short, very convex, shining; rufo-piceous, the antennae, rostrum, and legs ferruginous, set with minute, widely scattered, short, curled setae. Rostrum stout, arcuate, about as long as the prothorax, opaque, rugulosely punctate, and carinate to beyond the middle, smoother and shining at the tip. Eyes reduced to a few facets. Prothorax slightly broader than long, gradually widened to beyond the middle and then abruptly J narrowed to the short tubulate anterior portion ; coarsely, confluently punctate, anc with a shallow median groove. Elytra much wider than the prothorax, globose, the humeri obliquely truncated in front and produced into an obtuse tooth externally,^ with closely packed rows of very coarse transverse punctures separated by narrow, raised, shining interstices, 3 and 5 interruptedly costate, 5 with a conspicuous tubercle at the commencement of the apical declivity. Third tarsal joint feebly lobed. Length 2 mm. [$). Loc. Seychelles : Silhouette. One specimen from the forest immediately above Mare aux Cochons, over 1000 feet, IX. 1908. Diflers from small C. unicristatus by its globose, interruptedly costate elytra, the anteriorly widened, rugosely punctate, canaliculate prothorax, and the simply arcuate rostrum and non-cristate elytra of the male. The elytral costae are broken up CHAMPION— COLEOPTERA ; CURCULIONID^ 415 into several tubercles. The humeral protuberance is not quite symmetrical on the two wing-cases. C. sphceropterus has the general facies of a small Acalles. 23. Cycloterinus microphthalmus, n. sp. Oblong, convex, shining ; castaneous, the legs and the base of the antennae ferru- ginous ; sparsely clothed with minute, curled, suberect setae. Rostrum very stout, arcuate, as long as the prothorax, rugulosely punctate, carinate, and opaque to near the tip, the apex shining. Eyes reduced to a few facets. Prothorax barely as long as broad, the posterior portion widened forwards to the rounded anterior angles and then abruptly narrowed to the short tubulate anterior portion ; densely, coarsely punctate. Elytra short-oval, at the middle considerably wider than the prothorax ; with rows of closely placed, coarse, transverse punctures separated by very narrow, shining, raised interstices. Beneath coarsely, closely punctate. Anterior cox« moderately distant. Third tarsal joint small, feebly excavate above. Length 1^— 1| mm. {$). Loc. Seychelles : Silhouette. Two specimens, from near Mont Pot-a-eau, ca. 1500 feet, VIII. 1908 ; one is recorded as from a fallen " Bois Bouge " tree ( Wormia ferruginea). Much smaller than C. sphceropterus, the prothorax more rounded at the sides and with the punctures on the disc separate one from another, the elytra without tubercles and rounded at the sides from the truncated base. 24. Cycloterinus ccecus, n. sp. Oblong, convex, opaque ; reddish-brown, the rostrum and legs ferruginous ; clothed with minute, semierect, curled, ochreous setse, the setae on the elytra condensed into a compact line down the alternate interstices. Bostrum very stout, arcuate, nearly as long as the prothorax, separated from the head by a deep transverse groove, minutely punctate, rugulose and opaque towards the base, the long parallel-sided apical portion shining, and wider than the rest. Eyes wanting. Prothorax elongate, subcylindrical, the posterior portion subquadrate, as long as broad, and rounded at the sides anteriorly, the narrower tubulate anterior portion extending forwards over the head ; densely punctate, the punctures longitudinally confluent. Elytra oval, at the middle considerably wider than the prothorax ; seriato-foveolate, the alternate interstices costate, the others convex. Beneath very coarsely punctate. Presternum long, arcuate-emarginate in front. Anterior coxae very narrowly separated. Third tarsal joint small, feebly excavate above. Length 2 mm. ($). Loc. Seychelles : Mah^. One specimen, found in the high forest of Morne Blanc or Pilot, in November, 1908. The elongate, strongly cucuUate prothorax gives this insect a very different appearance from the forms described by Kolbe ; nevertheless, it can quite well be placed in Cyclo- terinus for the present, some of the additional species now known being almost intermediate. The antennae are wanting in the type. 416 PERCY SLADEN TRUST EXPEDITION Group Phcenicobatina, n. This group includes three genera agreeing in the following characters : — Tarsi with joints 2 and 3 short, very broadly and equally dilated in the two sexes, the claws minute or wanting ; rostrum free, deflexed, short and broad, or longer and dissimilarly formed, in the two sexes ; prothorax more or less cucullate in front ; ventral segments 1 and 2 long and connate, 3 and 4 very short, the sutures straight ; presternum unimpressed ; anterior coxse more or less separated ; wings fully developed or wanting ; body oblong or elongate, squamose or setose, rarely subglabrous above. The numerous species obtained by Mr Scott, some of which seem to be very abundant, appear to be absolutely confined to the endemic forests of the Seychelles : and as they cannot be referred to any of the " tribes" of Lacordaire, a new group is required for their reception. The peculiar tarsal structure of both sexes of these insects doubtless enables them to cling tightly to the leaves of the endemic palms, &c., on which many of them were observed in profusion. In steep places, where it was possible to look on to the tops of palms [Stevensonia, &c.) growing below, certain species (e.g. Phoenicobates vittatus) were seen in large numbers sitting exposed to the light on top of the palm leaves ; they presented a characteristic appearance as little dark linear objects resting lengthwise in the crinkles of the leaves*. Various forms were continually beaten from palms, both from the living and dead leaves : some small kinds appear to have been beaten principally, if not entirely, from still hanging or fallen dead leaves. Whether any were beaten from dicotyledonous plants or not, is uncertain. Several were found in the heads of felled Verschaffeltia splendida (palms) in Silhouette. On a number of occasions certain species were found sitting on the leaves of the endemic Pandani and of a low-growing mono- cotyledonous plant [Curculigo seychellensis). Moreover, when endemic palms and Pandani were cut down to investigate the leaf-base fauna, one or more forms of this group were often found down between the leaf-bases : thus, in the case of four species of Phoenicobates, specimens are recorded as having been taken from between leaf-bases of Pandanus, while in the case of two others specimens were found in a similar situation in the palm Stevensonia. It may therefore fairly be assumed that they feed on the palms and screw -pines. The group "Phcenicobatina" may be placed near the "Erirrhina" (Erirhinides) of Lacordaire. The Family Proterrhinidee of the Hawaiian Islands affords a somewhat analogous instance of an isolated insular group of Coleoptera, all the species of which (136) are endemic. The genera may be tabulated thus : Rostrum longer, dissimilarly formed in the two sexes, always smoother and more slender in $; wings present or wanting ... ... ... Phoenicobates. Rostrum short and broad, similarly formed in the two sexes ; wings wanting. Tibise hooked at the apex ; elytra oval ; rostrum widened outwards . . . Phainicobatopsis. Tibiae unarmed at the apex ; elytra oblong ; rostrum not widened outwards . . . Phcenicogenus, * See general account of collecting in Vol. xiv. of these Transactions, 1910, p. 25. CHAMPION— COLEOPTERA; CURCULIONID^ 417 Phcenicobates*, n. gen. Rostrum nearly or quite as long as the prothorax, deflexed, dissimilar in the two sexes, slender, cylindrical, and comparatively smooth in $, rugose, stouter, and often gibbous above or angulate beneath (as seen in profile), and with the lower apical portion shovel-shaped in the more typical forms in $, the scrobes obliquely descending to beneath the eyes ; mandibles short, without scar, when closed just visible beyond the tip of the rostrum ; antennse in $ usually inserted nearer the tip of the rostrum than in $ , slender, the scape abruptly clavate at the apex, the funiculus seven-jointed, joint 1 stout and obconic, the club acuminate-ovate, annulate, pubescent ; eyes moderately large, separated by less than the width of the rostrum, inserted in the anterior portion of the head immediately behind the base of the rostrum, the post-ocular portion of the head globose and punctate ; prothorax long, more or less cucuUate in front ; scutellum minute or invisible ; elytra oblong, covering the abdomen at the tip, regularly punctate-striate ; presternum unim- pressed, arcuate-emarginate in front, the anterior coxae inserted at about the middle, narrowly or moderately separated (distant in P. pandanicola) ; mesothoracic epimera small, not ascending ; metasternura variable in length, the episterna narrow ; ventral segments 1 and 2 long, connate, 3 and 4 short, the sutures 2 — 4 straight and deejD ; femora toothed or unarmed, the anterior pair only strongly toothed in some of the species; tibiae armed with a short hook at the middle of the apical margin; tarsi (fig. 20 b) with joint 1 small, triangular, 2 and 3 short, very broadly and equally dilated, 3 emarginate for the reception of the slender or oval fourth joint, 2 and 3 and the apex of 1 densely spongy-pubescent beneath, the claws minute, divergent, sometimes wanting; body elongate, subcylindrical, or oblong, sometimes fusiform in $, more or less squamose or setose, rarely subglabrous above ; wings fully developed or wanting. Type, P. vittatus. Twenty-five species are referred to this genus, many of them varying greatly in size. The larger typical forms resemble a small Lixus, others have the general facies of a Mecinus or Smici^onyx. Four are without wings, and one of these species and two others want the tarsal claws. Two of the large forms have the anterior femora only strongly dentate ; and one, which seems to be attached to Pandanus, has the anterior coxae widely separated. a. Tarsal claws present, the claw -joint extending beyond the third. a\ Anterior coxae narrowly or moderately separated. d~. Wings fully developed. al Anterior femora with a sharp tooth, the others unarmed : species large, elongate. a\ Rostrum of $ flattened above, not dilated beneath ; elytra usually vittate ; anterior coxae narrowly separated ... ... vittatus. * The name Phmnicobius has been used by Morch in Mollusca (1852) and by Leconte in Anthribid Coleoptera (1876); but Phcenicobates is sufficiently different to be used for a genus of palm-frequenting Curculionidse. 418 PERCY SLADEN TRUST EXPEDITION b\ Rostrum of profile. Percy Sladen Trust Expedition. (Champion) Trans. Linn. Soc. Ser.2.Zool.Vol.XVI.Pl. 22. E.Wilson del. Cambridge University Press . GOLEOPTEEA, GURCULIONID^.