BIHANG TILL K. SVENSKA VET.-AKAD. HANDLINGAR. Band. 11. .\:o 16. SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. BY CARL BOVALLIUS. COMMUNICATED TO THE ROYAL SWEDISH ACÄDEMY OF SCIENCES, 1885. DEC. <». STOCKHOLM, 1887. K o N G L. B O K T B Y C K E B I E T. P. A. NOIISTKDT Si SÖNER. OCR text unavailable for this page.AMPHIPODA HYPERIIDEA. Diagn. Hcad frce, not coalesced with the first pereional segment. Eyes mostly large, often occupying the wliole surface of t lie head. First pair of antennas without secondary flagellum. Maxillipeds coalesced into a kind of operculum, with- out palps. Uropoda more or less laminar, forming natatory organs. Telson undivided. Family 1. TYRONIDJ]. Diagn. Head small not tumid. Eyes small. First pair of antennas straight, styliform, fixed at the anterior side of the liead. Second pair angulated, fixed at the inferior side of the liead. ^[andibles without palp. Seventh pair of pereiopoda not transformed. Gen. 1. TYRO, H. Milne-Edwards, 1840. Histoire naturelie des Crustacés. Torne 3:me, p. 80. 1. T. cornigera, II. Milne-Edward.><, 1830.') »Extrait de Recherches pour servir ä l'hi.st. nat. des Crustacés am- phipodes>. Annales des Sciences nat., tome 20:nie, p. 387. Diagn. First pair of antennae straight, longer than the body. Body Hyperia-like. First pair of pereiopoda strong, with slen- der, almost liliform metacarpus. Dactyli of third and fourth })airs very strong. Exteriör rami of uropoda indistinct. Hah. Atlantic. ') The diagnose of the species is given here because the original diag- nose is mixed up with generic and specific characteristics. 4 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. 2. T. gracilis, Dana, 1850. Proc. of the American Academy of Science and Arts. Vol. 2, p. 219. Hab. Atlantic. 3. T. Sarsi, C. Bovalliu;s, 1885. »On some forgotten genera among the Amphipodous Crustacea>. Bih. till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14, p. 15, lig. 3. 4. T. atlantica, C. Bovallius, 1885. L. c. p. 14. Hab. Atlantic. 5. T. borealis, G. O. Särs, 1882. "Oversigt af Norges Crustacéer> etc. Christiania Vidensk. Selsk. Forhandl. 1882. N:o 18. p. 77. pl. 3, fig. 1, i a and ib. Hab. Off Lofoten, Arctic Sea. 6. T. Clausi, C. Botallius, 1885. »On sorae forgotten genera among the Amphipodous Crustacea». Bih. till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14, p. 14. Hah. Atlantic. 7. T. Tullberg!, C. Bovallius, 1885. L. c. p. 15. Hab. South Atlantic. 8. T. paciflca, n. sp. Diagn. Head longer than deep, broadly truncatcd anteriorly. The metacarpi of the first two pairs of pereiopoda long, linear, provided with hair.s, without any projections. Fifth pair longer than sixtli ; femiir shorter than the three following joints together, Seventh pair shorter than femur of fifth. Second pair of uro- poda of the same form as in T. marginata, but narrower. Exteriör rami of all pairs well developed. Telson long, triangulär. Hab. Pacific, at Corinto, Nicaragua. BIHANG TILL K SV. VET.-AKAD. HAXDL. BANI). 11. N:0 16. 5 1». T. marginata, C Bovallius, 1885. i) >Oii some forgotteri genera among the Amphipoflous Orustacea». Bih. till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14, p. 15. Diagn. Heau deeper than long. Eyes very large, placed just below the insertion of first pair of" antennai. Meta- carpi of" first and second pairs of pereiopoda produced anteriorly into a sharp-pointed angle on the anterior side of the dactylus; inetacarpus louger than carpus. Fifth pair longer than si.xth, femur (with the spine) longer than the three following joints. Seventh pair shorter tlian liaif the fifth, as long as femur of the same. Epimerals are distinct, their ar- ticulation with the pereional segments forming a prominent inargo. Second pair of uropoda very broad, the inner mar- gin broadly curved above, and sharply emarginated belov?; exteriör ramus long, nearly as long as half the interiör. Exteriör ramus of last pair of uropoda broad (it equals two thirds of the interiör coalesced one). Telson very minute. IJah. Atlantic, Mediterranean. 10. T. long-ipes, Dana, 1850. Proc. of tbe American Academy of Science and Arts. Vol. 2, p. 219. Hab. Pacific. Family 2. LANCEOLIDJ]. JJiagn. Head small, anteriorly truncated, not tumid. Eyes very small, often indistinct. First pair of antennae, short, liigh, compressed, fixed at the anterior side of the head. Second pair long angulated, fixed at the anterior side of the head. Mandibles with palp. Three posterior pairs of pereio- poda with rctractile dactyli. Seventh pair not transformed. Gen. 1. LANCEOLA, Th. Say, 1818. >An account of the Crustacea of the United States». Journ. of the Academy of Natural Science at Philadelphia,- vol. 1, part 2, p. 317. ') As the above quoted description was incomplete and, owing to an involuntaiy change of names on the labels, somewhat erroneous, a corrected diagnose is given here. fi c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPEKIIDEA. 1. L. pelagica, Th. Say, 1818. L. c. p. 318. Hab. »The Gulfstream . 2. L. Sayana, C. Bovallius. 1885. >0n some forgotten genera among the Amphipodous Crustacea'. Bib. till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14, p. 7, fig. 1. Hab. Atlantic. 3. L. Lovéni, C. Bovallius, 1885. L. c. p. 6. Hab. North Athintic. 4. L. serrata, C Bovalhus, 1885. L. c. p. 7. Hab. North Atlantic. 5. L. felina, C. Bovallius, 1885. L. c. p. 7. Hab. South Atlantic. 6. L. Clausi, C. Bovallius, 1885. L. c. p. 8. Hab. The mouth of Da vis Strait. Family 3. VIBILID^, Claus, 1872. Diagn. Head small, not tumid. Eyes small, like those in the Garamarids. First pair of antennas very large, com- pressed, second pair filiform, augulated: both pairs fixed at the anterior side of the head. Mandibles with palp. Daetyli of seventh pair of pereiopoda transformed. Gen. 1. VIBILIA, H. Milne-Edwards, 1830. >Extiait de Recherches pour sewir å Thistoire nat. des l'iu8tacos am- phipodesi. Ann. des Sci. nat.. tome 20:me, p. 386. BIHAXG TILL K. SV. VET.-AKAD. UANDL. BAND 11. N:0 16. 7 1. V. Peroni, H. Milne-Edwards, 1830. L. c. p. 386. Hist. nat. des Crustacés. Torne 3:me, p. 73, pl. 30, fig. 1. Hal). Indian Ocean. 2. Jeangerardi, Lucas, 1845. Explorations scientif. de TAlgérie pendant les années 1840-42. Zoo- logie. Hist. nat. des animaux articulés. P. 56, pl. 5, fig. 4 — 4 d. Hab. Atlantic, Mediterranean. i^. V. afflnis, Spence Bate, 1862. Catalogue of the specimens of Amphipodous Crustacea in the collect. of the Brit. Museum, p. 302, pl. 49, fig. 8. Hah. Java. 4. V. macropis, n. sp. Diagn. Head rostrate. Eyes very large, occupying almost the whole sides of the head. Flagellum of first pair of an- tennae elongate lanceolate, longer than the head. Carpal pro- cess of second pair of pereiopoda shorter than a fourth of metacarpus, smooth. Tibise of third and fourth pairs broad and strong but not tumid. Fifth and sixth pairs only a little longer than third. Second and third ural segments coalesced, hinder corners not produced. Rami of uropoda elongate- lanceolate, equal, sparingly serrated. Hal. South Atlantic. T). V. gibbosa, n. sp. Diagn. Head not rostrate. Eyes small. Flagellum of first pair of antennje irregularly lanceolate, shorter than the head. Fereional segments separated by deep constrictions making the dorsal side humpy. Carpal process of second pair of pereio- poda longer than half the metacarpus, serrated. Second and third ural segments coalesced, hinder corners not produced. Exteriör rami of vtropoda shorter than interiör. fiab. Tropical parts of Atlantic. 6. V. robusta, n. sp. Diagn. Head not rostrate. Flagellum of first pair of antennje rounded at the end, as long as the head. Carpal 8 e. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. process of second pair of pereiopoda half as long as meta- earpus, serrated. Tibiae of third and fourtli pairs uarrow. Sixth pair are a third longer than third; seventh as long as third. Dactyli of sixth pair shorter than a third of metacarpus. Second and third ural segments free, second a little shorter than third. Rami finely serrated, exteriör ones as long as interiör. Telson triangulär, longer than half the peduncle of the last pair of uropoda, and almost as long as the last two ural segments. Hal). xVtlantic, Indian Ocean. 7. V. borealis, Spence Bate and Westwood, 1862. A Histoiy of the British Sessile-eyed Crustacea. Vol. 2, p. 524, tig. Hab. BanfF, North Scotland. 8. V. Kroeyeri, n. sp. Diagn. Head scarcely rostrate. Flagellum of tirst pair of antennas very broad, as long as the head and the first pereioual seo-ment. Carpal process of second pair of pereiopoda half as long as metacarpus. Tibiff- of third and fourth pairs, thicker and longer than metacarpi, a little tumid, dactyli half as long as metacarpi. Fifth and sixth pairs only a little lon- ger than third and fourth; dactyli a third of metacarpi. Second and third ural segments free, second scarcely a third of the leno-th of the third segment; hinder corners of the last segment not produced. Telson obtusely triangulär, shorter than last ural segment. Hab. West coast of Greenland. y. V. longipes, n. sp. Diagn. Head not rostrate. Flagellum of iirst pair ot antennas thick, ovate, as long as the head. Carpal process of second pair of pereiopoda short, serrated, hinder margin fringed with stiff hairs. Tibia? of third and fourth pair.? narrow, not tumid; sixth pair are almost twice longer than third; seventh pair shorter than third. Dactylus of sixth pair shorter than a fourth of metacarpus. Second and third ural segments free, second longer than third. Telson semi- circular, as long as half the last peduncles. Hab. Pacific, South Atlantic. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 9 10. V. Edwardsi, SrENCE Bate, 1862. ("at. Amph. Crust. of the Brit. Museum. P. 300, pl. 49. fig. 6 and 7' Hab. »Xear the Powel Islands). 11. V. viatrix, n. sp. Diagn. Head not rostrate. Flagellum of the first pair uf antennas irregularly lanceolate, truncate at the lower anterior corner, as long as the head and the first pereional segment. Carpal process of second pair of pereiopoda longer than half the metacarpus, serrated. Tibiae of third and fourth pairs very thick, tumid, longer than carpi, dactyli almost as long as metacarpi. Sixth pair more than a third longer than third; seventh pair as long as third. Dactylus of sixth pair as long as half the metacarpus. Second and third ural segments free, second shorter than half the third. Hinder corners of urus not produced. Telson broad, triangulär, longer than half the peduncle of last pair of uropoda. Hab. Atlantic. 12. V. gracilis, n. sp. Diagn. Head produced into a very short rostrum. Fla- gellum of tirst pair of antenna:* evenly tapering toward the end, as long as the head. Carpal process of second pair of pereiopoda sparingly serrated. Tibiae of third and fourtli pairs narrow, not enlarged. Sixth pair only a sixth longer than third; seventh shorter than third. Dactyli of fifth and sixth pairs strong, broad at the base, ciliated, shorter than half the metacarpi. Second and third ural segments coalesced, hinder corners a little produced backwards. Telson round, a little longer than half the peduncle of last pair of uropoda. Ilab. Pacific. Vn. V. gracilenta, n. sp. Diagn. H(3ad not rostrate. Eyes large. Flagellum of first pair of antenna' narrow, acute, with the superior margin straight, the interiör evenly arched. Carpal process of second pair of pereiopoda robust, irregularly serrated, as long as meta- 10 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. carpus. Third to sixth pairs as in V. gracilis. Second and third ural segments coalesced, hinder corners strongly produced backwards, as far as the hinder margin of telson. Peduncles of last pair of uropoda linear, louger than rami. Telson tri- angularly rounded, shorter than half the last peduncle. Hah. Atlantic. 14. V. armata, n. sp. Diagn. Head obtusely rostrate. Eyes mediocre. Fla- gellum of first pair of antenna? narrow, acute, superior and in- ferior margins straight. Inferior corners of metacarpus of second pair of pereiopoda produced into sharp serrated points on each side of dactyliis; carpal process longer than meta- carpus. Tibiae of third and fourth pairs narrow, longer than carpi ; dact}^! almost straight, only a a little shorter than meta- carpi. Fifth and sixth pairs a fourth longer than third; dae- tyli half as long as metacarpi. Second and third ural segments coalesced, posterior corners produced, but not as far as the hinder margin of telson. Peduncles of last pair of uropoda linear, as long as rami. Telson elongate, rounded behind, lon- ger than half the last peduncles. HaJ>. South Atlantic. 15. V. pyripes, n. sp. Diagn. Head not rostrate. Eyes small. Flagellum of first pair of antenns? ovate, longer than the head. Carpal pro- cess of second pair of pereiopoda shorter than a third of meta- carpus, almost smooth. Tibi?e and carpi of third and fourth pairs ver}^ robust, a little tumid; metacarpi robust, shorter than carpi; dactyli shorter than half the metacarpi. Fifth and sixth pairs a third longer than third, dactyli very short. Second and third ural segments coalesced but marked by a very deep constriction on each side. hinder corners a little produced. Peduncles of last pair of uropoda very broad, pear-shaped, shorter than rami. Telson round, verv broad. longer than last peduncles. HaJ). Tropical parts of Atlantic. BTHANG TILL K. SV. VET.-AKAD. HAXUL. BAND 11. N:0 16. 11 Family 4 CYLLOPODIDiE. Diagn. Head large, globular. Eyes large occupying the whole sides of the head. First pair of antennse fixed at the anterior side of the head, with the first joint of flagellum tumid, elongate conical, the rest of flagelhim terminal, few- jointed. Second pair filiform, angulated, fixed at tlie inferior side of the head. Mandibles with palp. Dactyli of seventh pair of pereiopoda trausformed. Gen. 1. CYLLOPUS, Dana, 1,s52. United States Exploring Expedition. Crustaeea. Vol. 2. p. 989. 1. O. magellanicus, Dana, 1882. L. c. Vol. 2, p. 990, pl. 68, tig. 1 a— 1 g. Ilab. »Orange Bav, Tierra del Fiiego». 2. O. Batei, n. n. Typ>is: C. magellanicus. Spence Bate. Cat. Amph. Crust. Brit. Museum, p. 305, pl. 50. fig. 1. Hab. »»South Atlantic, Lat. 37" 26' S, Loug 1 44' \V.» o. C. armatus, n. sp. Diagn. Head a little produced betweeu the first pair of antennae. Carpus of first pair of pereiopoda not produced into a process; tnetacarpus armed at the hinder margin with a row of three-pointed, regular teeth. Metacarpus of second pair shorter than carpus, armed with a crest of inequal, sharp teeth. Dactyli of third and fourth pairs long, stout, serrated. Metacarpi of fifth and sixth pairs as long or longer than the two preceding joints together; dactyli smooth, pedunculated. Femur of seventh pair shorter and a little narrower than femur of preceding pair, fuUy twice as long as the following joints together; dactylus as long as metacarpus. Hinder corners of the pleonal segments rounded. First pair of iiro- poda reach to the ends of the last pair, rami longer than peduncles, coarsely serrated. Rami of last pair half as long as 12 c. BOVALLirS, SYSTEMATKAL LIST OF THE AMPHIPODA HYPERIIDEA. peduncles, finely serrated. Telson roimded, as long as a foiirth of the peduncle of" the last pair of uropoda. Hab. South Atlantic, Indian Ocean. •i. C. levis, n. sp. Diayn. Head a little pioduced between tlie first pair of antennie. Carpus of first pair of j>ereiopoda not produced into a process; metacarpus smooth. Carpal process of second pair, short, fringed with long bristles; metacarpus smooth. Dactyli of third and fourth pairs short, smooth. Meta- carpi of fifth and sixth pairs shorter than the two pre- ceding joints together; dactyli very short, smooth. Femur of seventh pair as long and broad as femur of sixth pair; dactylus shorter than metacarpus. Hinder corners of first two pleonal segments angular, sharp-pointed. First pair of uropoda do not reach as far as the last; rami scareely longer than peduncles. Inner ramus of second pair elongate ovate. Rami of last pair are as long as hall the peduncle, serrated. Telson short, rounded, scareely equalling a sixth of the length of the peduncle of the last pair of uropoda. Jlah. South Pacific. .'). C. Danse, Spence Bate, 1S62. Cat. Araph. Crust. Brit. Museum, p. 308, pl. 50. tig. 3 — 3. i. llab. »Near the Fowel Islands:. Organismus der Phionimiden», Arbeiteii aus dem Zool. Inst. der Uni- versität Wien und der Zool. Station in Triest. Tom. 2. p. 64. (6). 1. P. gracilis, Claus, 1879. L. c. p. fi5 (8): pl. 1, ftg. 4—5. Hab. Atlantic. 2. P. crassipes, Claus, 1879. L. c. p. 65 {%): pl. 1, lig. 6- 9, pl. 2, fig. 10. Hah. Atlantic, Mediterranean. 3. P. clypeata, C. Bovallius, 1885. »On some forgotten genera among the Amphipodous Crustacea>. Bi- hang till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14, p. 11, fig. 2. Hah. Tropical parts of Atlantic. 4. P. pectinata, n. sp. Diagn. Head as long as deep, longer than the first three pereional segments. Pleon as long as the last five pereional 14 c. BOVALLILS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. segments together. Pereiopoda robust; first and second pairs equal; third and fourth pairs not longer than fifth and sixth ; seventh pair nearly as long as sixth. Rami of pleopoda six-to eight-jointed, peduncles large, more than twice as long as rami. Outer margins of interiör rami of first pair of uro- poda armed with a combe-like row of long, straight bristles, outer margins of two following pairs strongly serrated. Telson broadly rounded. Hah. Pacific. South Atlantic. ? P. Gaberti, 11. .Milne-Edwards, 1840. Histoiie natuielle des Crustacés. Torne 3:me, p. 83. Hah. Indian Ocean. Family 6. THAUMATOPSID^, C. Bov.^LLir.s 1886. Diayn. Head and body very large, tuniid. Eyes large, occupying the upper parts of the head. First pair of untcnnce straight or angulated not lumid. Second pair rudimentary (in both sexes). Mandibles without pulp. Seventh pair of pereio- poda not transformed. Gen. 1. THAUMATOPS, K. v. Willemoes-Suhm, 1874. >0n a new genus of Amphipod Crustaceans.» Philos. Tians, of the Roy. Soc. Vol. 163. Part. 2, p. 638. 1. Th. Neptunus, Guehin-Méneville, 1842. »Description d'un Crustacé amphipode formant un genre nouveau dans la famille des Hypérines.» Revue Zoologique. Année 1842. p. 214, pl. 1, fig. 1. Hah. Indian Ocean. 2. Th. pellucida, K. v. Willemoes-Suhm, 1874. »On a new genus of Amphipod Crustaceans.» Philos. Träns, of the Roy. Soc. Vol. 163, p. 684, pl. 49 and 50. Hab. Atlantic. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. 11. N:0 16. 15 3. Th. Lovéni, C. Bovallius, 1886. »Remarks on the genus Cysteosoma or Thaumatops.> Bih. till K. Svenska Vet-Akad. Handl. Bd. 11. N:o 9, p. 10, fig. 1—14. Hab. Indian Ocean. 4. Th. longipes, C. Bovallius, 1886. L. c. p. 13, fig. 15—23. Hab. Off the west coast of Australia. Family 7. MIMONECTID^, C. Bovallius, 1885. Diagn. Head and a part or the whole of pcreion devclo- ped into an enormous, balloon-shaped globe. Ocelli not united bvit dispersed on cach side of the head. First pair of antenn;*' straight. Second pair small, four-jointed, fixed at the inferior side of the head. Mandibles without palp. Seventh pair of pereiopoda not transformed. Gen. 1. MIMONECTES, C. Bovallius, 1885. »Mimonectes, a remarkable genus of Amphipoda Hyperidea», p. 2. Nova Acta Soc. Reg. Scient. Upsala. Ser. III. Vol. 13. 1. M. Lovéni, C. Bovallius, 1885. L. c. p. 3, pl. 1. Hab. Atlantic. 2. M. sphsericus, C. Bovallius, 1885. L. c. p. 11, pl. 2, fig. 12. Hab. Tropical parts of Atlantic. 3. M. Steenstrupi, C. Bovallius, 1885. L. c. p. 12, pl. 2, fig. 14, Band. 14. Hab. Davis Strait. Family 8. HYPERIIDiE, 0ana, 1852. Diagn. Head large more or less globular. Eyes large, occupying the whole sides of the head. Antennse straight 16 c. BOVALLIUS, sySTEMATICAL LIST OF THE AMPHIPOUA HYPERIIDF.A. witli multi-articulate tlitgella (ef) or sliort uni-articulate llagella (9). Mandibles with palp. Five last pairs of pereiopoda walking legs. Seventh pair of pereiopoda not transforined. Gen. 1. HYPERIA, Latreille, 1825. Les familles naturelies du légne animal. p. 289. (see also Di-smarcst. Considérations, génerales sur la classe des Crustacés, p. 285. Paris 1825). 1. H. medusarum, O. F. Muller. 1116. Zoologise Danicse Prodromus. N:o 2,555, p. 148, (see Ström. Physisk og Oeconomisk Beskrivelse över Fogderiet Söndmör. Part. 1, p. 188, Soröe 1762). IJah. North Atlantic, wcst coast of Sweden and Norwav, west coast of (ueeuland, Arctic Ocean. 2. H. Latreillei, H. Milne-Edwards. »Extrait de Eechercbes pour servir ä Thistoire naturelle des Crustacés amphipodes> Ann. des Sciences nat.. tome 2():me. p. 388, pl. 11. fig. 1-7. Hab. Atlantic, Arctic Ocean. 3. H. Gaudichaudi, H. Milne-Edwards, 1840. Histoire naturelie des Crustacés. Tome 3:me. p. 77. Hab. Coast of Chile. 4. H. Fabrei, H. Milne-Edwari>s, 1840. L. c. p. 82, pl. 30, fig. 18. Hab. Indian Ocean. 5. H. fera, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 982, pl. 67, fig. 6. Hab. Tropical parts of Atlantic. <). H. rubescens, Dana, 1852. L. c. p. 984. pl. 67. fig. 9. Hab. Pacific, Lat. 8= N, Long. 124^ W. BIHAXG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 17 7. H. galba, JMontagu, 1813. »Descriptions of some new or rare animals from the South Coast of Devonshire.» Träns, of the Linn. Soc. Vol. 11; part 1. p. 4, pl. 2, fig. 1. Hab. North Atlantic. 8. H. agilis, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 986, pl. 67, fig. 11. Hah. Pacific, Lat. 41° S., Long. 70' 25' \V. H. minuta, Edward, 1868. »Stray notes on some of the smaller Crustaceans. N:o 1.» Joiirn. of the Linn. Soc. A''ol. 9, p. 145. Hah. The North Atlantic. 10. ? H. mediterranea, A. Costa, 18()5. >Sopra una specie Mediterranea del genere Lestrigonus.» Rend. dell' Accad. delle science fis. e matem. 1865. Napoli, p. 34. Hah. Mediterranean. Gen. 2. lULOPIS, n. g. Diagn. Body hirsute. Head very large, deeper than long. Antennas as in Hyperia. Pereional segments raised, forraing rolls. The first two pairs of pereiopoda subcheliform, the spoon- like carpal processes compressed, narrow. Carpi of third and fourth pairs not dilated. Three last pairs subequal, metacarpi short but broad. Epimerals distinct. Uropoda short and broad. Telson large. 1. I. Lovéni, u. sp. Diagn. Head and body covered with comparatively long, line hairs. Carpus of first pair of pereiopoda more than twice as broad as metacarpiis, armed with a strong spine at the feebly produced hinder corner. Carpal process of second pair nearly as long as half the raetacarpus, armed with a strong spine at the tip of the process. Fcmora of third and foi;rth pairs a 2 18 c. BOVALLIUS, SySTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. little longer than those of the following pairs, all narrow above, broader below. Urus and its appendages sparingly covered with hairs. Rami of" uropoda long, very narrow, sharppointed not serrated, exteriör ones longer than interiör. First pair of uropoda do not reach to the apex of last pair. Telson is broader than the peduncle of the last pair. Hah. South Atlantic. 2. I. mirabilis, n. sp. Diagn. Head and body covered with very short, minute hairs. Carpus of firsr, pair of pereiopoda narrow, not twice broader than metacarpus, carrying some bristles, but wanting terminal spine. Carpal process of second pair as long as half the metacarpus, bordered with short bristles, but without ter- minal spine. Metacarpi of both pairs armed with three strong spines on each side. Femora of third and fourth pairs nearly as long as those of" the following, oblong-ovate. Femora of last three pairs broader above, narrower below. Urus and its ■appendages entirely without hairs. Rami of uropoda broadly ovate, finely serrated, exteriör ones shorter than, or as long as the interiör. First pair of uropoda reach to the apex of the last pair. Telson is a little narrower than the peduncle of the last pair. Hab. Pacific, Bay of Panama. Gen. 3. HYPEROCHE, n. g. Diagn. Body smooth. Head large, deeper than long. Antennas as in Hyperia. Pereional segments even. First two pairs of pereiopoda cheliform, the carpal processes long, knife- like. Carpi of third and fourth pairs not dilated. Last three pairs subequal, metacarpi not elongated, narrow. Epimerals distinct. Uropoda tolerably short and broad. Telson large. 1. H. Kroeyeri, C. Bovallius, 1885. »On some forgotten genera among the Amphipodos Crustacea.» Bih, till K. Svenska Vet.-Akad. Handl. Bd. 10. N:o 14. p. 17. Hab. West coast of Greenland. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 19 2. H. abyssorum, A. Boeck, 1870. Crnstacea amphipoda borealia et arctica. p. 6. Hab. Hardangerfjord, west coast of Norway. 3. H. Luetkeni, n. sp. Diagn. Carpal processes of the first two pairs of pereio- poda longer than the metacarpi, armed with retroverted, broad teeth. Tibije of the five following pairs as loog as carpi. Carpi of third and fourth pairs produced downwards into sharply serrated, short processes. Femora of three last pairs are very narrow, linear. Rami of first pair of uropoda equal in length. Hah. North Atlantic. 4. H. Martinezi, Fkitz Muller, 1864. Fiir Darwin. P. 52, fig. 44—49. Hah. Off the Brazilian Coast? 5. H. preliensilis, Spence Bate and Westwood, 1868. A History of the British Sessile-eyed Crustacea. Vol. 2, p. 520, fig. Hah. Off the east coast of Scotlaud. Gen. 4. TAURIA, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 988. 1. T. maerocephala, Dana. L. c. p. 988; pl. 68, fig. 2. Hab. »Antarctic Sea.» Gen. 5. HYPERIELLA, n. g. Diagn. Body smooth. Head large, deeper than long, flattened anteriorly, antennje as in Hyperia. Pereional segments even. Two first pairs of pereiopoda subcheliform, carpal processes as in Hyperia. Carpi of third and fourth pairs not dilated. Fifth pair longer than the following, with elongated metacarpus. Two last pairs with short metacarpi. Epimerals distinct. Uropoda elongated. Telson mediocre. 20 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. 1. H. antarctica, u. sp. Diagn. Head more than twice deeper than long. Flagella of botli pairs of antennae (in tlie male) short, with loug slen- der articuli, less than twelve in member. Carpus of first pair of pereiopoda verv dilated, nearly as broad as long, frin- ged with strong, simple bristles; metacarpus and dactylus equally serrated along the inner margins. Carpal process of second pair longer than half the metacarpus, fringed and tipped with strong, simple bristles ; metacarpus and dacty- lus equally serrated as in preceding pair. Metacarpi of third and fourth pairs somewhat elongated, equally serrated. Dactyli shorter than half the metacarpi, smooth. Metacarpus of fifth pair elongated, provided with a comb-like, serrated edge as in Euthemisto libellula. Metacarpi of sixth and seventh pairs not elongated, broad, finely serrated along the anterior margins. Telson equals a fourth of the length of the peduncle of the last pair of uropoda. Hah. Antarctic Seas, around Cape Horn. 2. H. fusca, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2. p. 983; lig. 8. Hah. Tropical parts of Atlantic. 3. ? H. pupa, A. Costa, 1853. Eend. della Reale Accademia delle Scienze. Kapoli, 1853, p. 178. Hah. Mediterranean. Gen. 6. PARATHEMISTO, A. Boeck, 1870. Crustacea Amphipoda borealia et arctica, p. 7. 1. P. abyssorum, A. Boeck, 1870. L. c. p. 7. Hah. \Vest coast of Swedeu and Norway. 2. P. oblivia, Kroeyer, 1838. »6r0nlands Amphipoder>, Det Kongl. Dansk» Vidensk.-Selsk. nat. og math. Afhandlinger, Deel 7, p. 70, pl. 4, fig. 19. Hah. Greenland. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. X:0 16. 21 3. P. eompressa, A. Goés, 1865. »Crustacea Amphipoda maris Spetsbergiam alluentis, cum speciebus aliis arcticis.i Of vers. af K. Svenska Vetensk.-Akad. förhandl. 186ö, p. 533, pl. 41, fig. 34. Hab. Davis Strait. 4. P. longipes, n. Type. Hyperia oblivia, Spence Bate, (nec Kroeyer), 1862. Cat. of the spec. of Amph. Orust, in the coll. of the British Museum, p. 298, pl. 49, fig. 5. Hab. Moray Frith. 5. P. trigona, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. '.187, pl. 67, fig. 12. llab. Cape Horn. 6. P. japonica, n. sp. Diagn. Body thick, not compressed. Carpal process of seeond pair nearly as long as metacarpus, fringed with simple bristles. Carpi of third and fourth pairs oblong, ovate, fringed with stovxt bristles along the hinder convex margin; metacarpi shorter than carpi, smooth. Fourth pair as long as fifth, sixth pair a little longer than fifth and seventh, which are equal. Rami of last pair of uropoda equal in length. Telson longer thpi a third of the peduncles of the last pair of uropoda. Hab. Seas off Japan. Gen. 7. EUTHEMISTO (Thcmisto »), Guérin, 1828. »Mémoire sur le nouveau genre Thémisto, de la classe des Crustacés,» Mém. de la Soc. d'Hist. nat. de Paris. Torne 4:me, p. 1. 1. E. Gaudichaudi, Guérin, 1828. L. c. p. 7, fig. Hab. Off The Falkland Islands. ') Thémisto is changed to Euthemisto by me, because the name Thémisto was already in 1815 preoccupied by Oken for a new genus among the Mollusca. 22 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. 2. E. libellula, Mandt, 1822. Observationes in Historiam naturalem et Anatomiam comparatam, in itinere Groenlandico factae. p. 32. Hal). Arctic Sea. o. E. antarctica, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 1005, pl. 69, fig. 1. Hah. Antarctic Sea, Lat. 68' S., Long. 94' W. 4. E. Guerini, Spence Bate, 1860. Cat. Amph. Crust. of the British Museum, p. 313. pl. 50, fig. 9. Hah. South Atlantic. 5. E. bispinosa, A. Boeck, 1870. Crustacea Amphipoda borealia et arctica, p. 8. Hab. Greenland. 6. E. Nordenskiöld!, u. sp. Diagn. First pair of antennae (in the female) short and thick. Carpal process ol' second pair of" pereiopoda scarcely longer than lialf the metacarpus, without terminal spine, but tipped with 4 — 5 long bristles. Carpi of third and fourth pairs broadly ovate, a third longer than broad. Femora of last three pairs very broad, dactyli long, armed with a bunch of bristles at the anterior side. Metacarpus of fifth pair rather convex. Telson spade-shaped, longer than a third of the peduncles of the last pair of uropoda. Hab. Atlantic. Gen. 8. THEMISTELLA, n. g. Diagn. Body smooth. Head mediocre, deeper than long. First three joints of flagellum of first pair of antenna^ provided with olfactory processes. The second pair like that in Hyperia. First two pairs of pereiopoda subcheliform, with narrow, gauge-shaped carpal processes. Carpi of third and fourth pairs not dilated. Fifth pair are the longest, the foUowing decreaseng in length. INIetacarpi of last three pairs BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 23 somewhat elongated. Epimerals not distinct. Uropoda long and narrow. Telson mediocre. 1. Th. Steenstrupi, n. sp. Diagn. Peduncle of first pair of antenna? verv thick. Head with pereion shorter than pleon. Carpal process of first pair of pereiopoda longer than a tliird of metacar- pus; carpal process of second pair longer than half the metacarpus. JVIetacarpi of third and fourth pairs elongated, dactyli a third of the length of metacarpi. Femora of last three pairs subequal, truncated below; metacarpi elon- gated, that of fifth pair the longest. Rami of last pair of uropoda equal, narrow, acute. Telson round, equalling a fifth of the length of the peduncles of the last pair of uropoda. Hab. Tropical parts of Atlantic. Gen. 9. PHRONIMOPSIS, Claus, 1879. »Organismus der Pbronimideu,» Arbeiten aus dem Zoologischen Institute der Univ. Wien und der Zool. Station in Triest. Tom 2, p. 63 (5). 1. Ph. spinifer, Claus, 1879. L. c. p. 64 (6), pl. 1, fig. 1—3. Hah. Strait of Messina. 2. Ph. Sarsi, n. sp. Diagv. Pereion normal, not tumid, "without pigment-spots. The first segment of pereion free. Antenua? without spinous processes. Femora, genua and tibia^ of last three pairs of pereiopoda produced into sharp points at the lower anterlor corners. Rami of uropoda long narrow, sharppointed, densely fringed with minute hairs. Telson semicircular, shorter than a sixth of the peduncles of the last pair of iiropoda. Hab. Tropical parts of Atlantic. Family 9. PHRONIMIDJE, Dana, 1852. Diagn. Head large, tumid, more or less conical, much deeper than the body. Eyes large, occupying parts of the sides and 24 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. the top of tlie liead. First pair of antennce tixed at tlie an- terior side of tlie head; with a multi-articulate tiagellum (in the male); second pair fixed at the anterior side of the head, niulti-articulate (in the male) or rudimentary (in the female). Mandibles without palp. Seventh pair of pereiopoda not trans- formed. Peduncles normal. Subfamily 1. DAIRELLINJ:. Diagn. Head almost round. All the pereiopoda are simple, walking legs. Epimerals marked but not articulated. Gen. 1. DAIRELLA, u. g. Diagn. First and second pairs of pereiopoda simple, with straight, short dactyli. Carpi off all the pereiopoda elongated. Peduncles of uropoda very broad with distant rami. Telson very short and broad. 1. D. californica, C. Bovallius, 1885. >0n some forgotten genera among the Amphipodous C^ustacea^. Bi- hang till K. Svenska Vet.-Akad. Han41. Bd. 10. N:o 14, p. 11. Hah. Off' the coast of South Califoruia. 2. D. latissima, n. sp. Diagn. Head not higher and longer than the first two coalesced pereional segments. Carpus of tirst pair of pereio- poda twice broader and longer than metacarpus. Fifth pair much longer than fourth. Peduncles of first pair of uropoda shorter than those of second pair. Rami of last pair are broadly ovate. Hah. South Atlantic. Subfamily 2. PHRONIMIN^. Diagn. Head conical. Fifth pair of pereiopoda are trans- fonned into a strong prehensile organ. Epimerals coalesced with the pereional segments. BIHAXG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 25 Gen. 2. PHRONIMA, Lateeille, 1802. Histoire naturelle gtnérale et particuliére des Crustacés et des Insectes. Torne 3:me, p. 38. 1. Ph. sedentaria, Fokskål, 1775. Descriptiones animaliiim (ju* in itinere orientali observavit^ p. 95. Hab. Mediterraneao, Atlantic. 2. Ph. atlantica, Guérin-Méneville, 1836. j> Description de quelques genres nouveaux des Crustacés appartenant å la famille des Hypérines.> Magazin de Zoologie. Sixiéme Année. Classe 7, p. 7, pl. 18, fig. 1. Hab. Atlantic, o. Ph. Novse Zealandiae, Powell, 1877. Träns. N. Z. Inst , vol. 7, p. 294. Hab. New. Zealand. 4. Ph. spinosa, n. sp. Diagn. First and second pairs of pereiopoda subclieli- ibrni. Third and Iburth pairs louger than tifth; the lower hinder corners of femora and genua as well as the ends of nietacarpi produced into sharp points. The lower hinder corner of femur of fifth pair also produced; carpus trian- gulär. Femur of seventh pair is nearly twice longer than femur of sixth pair, both with the lower anteiior corners pro- duced into sharp jDoints, as well as the corresponding corners of genua. Second pair of uropoda small, they do not attain the apex of the peduncles of the last pair. Peduncles of the last pair are six times longer than telson. Hab. Tropical parts of Atlantic. 5. Ph. Colletti, n. sp. Diagn. First and second pair of pereiopoda subcheliform. Third and fourth pairs much longer than fifth. Carpus of fifth pair very large, almost quadrangular, with three strong tooth-iike tubercles at the lower margin, dactylus without 26 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPEKIIDEA. tubercle. Sixth and seventh pairs shorter tliau fifth, femora equal in length. Second pair of uropoda mediocre, reaching beyond the apex of the peduncles of the last pair. Telson nearly as long as broad, a third as long as the peduncles the last pair of uropoda. Hah. South Atlantic. Gen. o. Phronimella, Claus, 1872? »Zur Naturgeschichte der Phronima Sedentaria Forsk.> Zeitschr. fiir wissensch. Zoologie. Torne 22. 1. Ph. elongata, Claus, 1863. »Bemerkungen iiber Phronima sedentaria Forsk. und elongata n. sp.> Zeitschr. fiir wissensch. Zoologie. B. 12, p. 193, pl. 19, tig. 2, 3, and 7. Hab. Atlantic, Mediterranean. 2. Ph. flliformis, u. sp. Diaan. Second pair of pereiopoda miich longer thau the first; metacarpal processes longer than half the dactylus. Fourth pair longer than fifth. Femora of sixth and seventh pairs equal in length. Second pair of uropoda well developed. Hah. South Atlantic. Family 10 ANCHYLOMERIDJ]. Diagn. Head mediocre, a little tumid, not deeper than the body. Eyes large, occupying the sides of the head. First pair of antennse fixed at the anterior side of the head, with multi- articulate flagellum (in the male). Second pair fixed at the inferior side of the head, multi-articulate (in the male), or wan- ting (in the female). Mandibles with palp. Epimerals di- stinct. Seventh pair of pereiopoda reduced or transformed. Peduncles of uropoda broad, laminiform, without rami. Gen. 1. ANCHYLOMERA, H. Milne-Edwaeds, 1830. »Extrait de Recherches pour servir ä l"Histoire naturelle des Crustacés amphipodes. Ann. des Sciences naturelies. Torne 20:me, p. 39i. BIHANG TILL K. SV. VET.-AKAD. HAKDL. BAND. 11. N:0 16. 27 1. A. Blossevillei, H. Milne-Edwakds, 1830. L. c. p. 394. Hah. Indian Oceau. 2. A. Hunteri, H, JMilne-Edwards, 1830. L. c. p. 394. Hah. Isle of Bourbon. 3. A. purpurea, Dana, 1882. United States Exploring Expedition. Crustacea. Vol. 2, p. 1004, pl. 68, fig. 9. Hab. Atlantic. 4. A. thyropoda, Dana, 1852. L. c. p. 1004, pl. 68, fig. 10. Hah. South Atlantic. 5. A. abbreviata, Spence Bate, 1862. Cat. of the spec. of Amphip. Crust. in the coll. of the Bi'it. Museum, p. 324, pl. 52, fig. 3. Hah. Between The Falkland Islands and Post Jacksson. 6. A. antipodes, Spence Bate, 1860. L. c. p. 322, pl. 51, fig. 9—10. Hab. Antarctic Sea. Gen. 2. PHROSINA, Risso, 1826. Histoire naturelle des principales productions de TEurope méridionale, etc. Torne 5: me, p. 91. 1. Ph. seminulata, Risso, 1822. iMémoire sur quelques nouveaux Crustacés observés dans les environs de Nice.> Journ. de Physique, de chimie et d'hist. naturelle. Torne 95, p. 245. Hab. Mediterranean, Atlantic. 28 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMFHIPODA HYPERIIBEA. 2. Ph. Nicetensis, H. Milne-Edavards, 1830. »Extrait de Recherches pour servir ä Thist. nat. des Crustacés amphi- podes.j Ann. de Sciences naturelles. Torne 20:me, p. 293. Hah. Medltenanean. 3. Ph. longispina, Spence Bate, 1862. Catal. of the spec. of amph. Crust. in the coll. of the British. Museum, p. 320, pl. 51, fig. 7. «. Hab. South Atlantic. Gen. 3. PRIMNO, Guérin-Méneville, 1836. »Description de quelques genres nouveanx de Crustacés appartenant ä la famille des Hypérines.> Magazin de Zoologie. Sixiéme Année. Classe 7, p. 2. 1. P. macropa, Guérin-Méneville, 1836. L. c. p. 4, pl. 17, fig. 1. Hah. Pacific, Soutli Atlantic. Family 11. PHORCIDiE, Spence Bate, 1860. Diayii. Head nearly globular, a little tumid, deeper than tlie body. Eyes occupying- the Igwer parts of the sides or the whole sides of the head. First pair of antennas fixed at the anterior side of the head; tirst joint of ilagellum tiunid, the rest subterminal. Second pair few-jointed, short, not angularly folded, fixed at the inferior side of the head. jMandibles with palp (in the males), or wanting palp (in the females). Seventh pair of pereiopoda reduced. Peduncles normal. Gen. 1. PHORCUS, H. Milne-Edwards, 1830. »Extrait de Recherches pour servir ä THistoire naturelie des Crustacés amphipodes.» Ann. des Sciences naturelles. Tora. 20:me, p. 391. 1. Ph. Reynaudi, H. .Milne-Edwards, 1830. L. c. p. 392. Hah. Indian Ocean. BIHANG TILL K. SV. VET.-AKAD. HAXUL. BAND 11. N:0 16. 29 2. Ph. hyalocephalus, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, {5. 1006, pl. 69; fig. 2. Hah. Tropioal parts of Atlantic. 3. Ph. Lovéni, n. sp. Viagn. First segment of pereion twice longer thau se- cond. First pair of pereiopoda as long as second. Fifth pair longer than sixth. Hinder lower corner of tibiae of sixth pair obtusely ronnded. Fiagellum of first pair of pleopoda 6 — 7-jointed. First segment of pleon shorter than tlie last two pereional segments. Rami of second pair of uropoda longer than peduncles. Telson broad triangulär, longer than peduncles of last pair of uropoda. Hah. Caribbean Sea. Gen. 2. LYCJEOPSIS, Claus, 1879. »Die Gattungen und Arten du Platysceliden.> Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tora 2, p. 187 (41). 1. L. themistoides, Claus, 1879. L. c. p. 188 (42). Hah. Mediterraneau. 2. L. Lindbergi, u. sp. Uiayn. Head as long as the first three pereional seg- ments. Dactylus of first pair of pereiopoda longer than half the metacarpus; dactylus of second pair longer than the meta- carpus, bifid, transformed iuto a peculiar sensitive organ. Joints of sixth pair very dilated, tibia longer than metacarpus. Femur of seventh pair dilated, ovate. Peduncles of first pair of uropoda longer than rami, peduncles of second and third pairs shorter than the exteriör rami. Last ural segment longer than last pair of uropoda. Telson nearly twice longer than the peduncles of the last pair of uropoda. Hab. Tropical parts of Atlantic. 30 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. Family 12. TRYPH^ENID^, A. Boeck, 1870. Diagn. Head large, globular, tumid, deeper than the body. Eyes large, occupying the whole sides of the head. First pair of antennse curved, fixed at the inferior side of the head, first joint of flaorellum large, tumid, with the rest of flaffellum subtermiual. Second pair fixed at the under-side of the head, angularly folded (in the male), or wanting (in the female). Mandibles with palp. Seventh pair of pereiopoda not transforraed. Peduncles of uropoda normal. Gen. 1. TRYPH^NA, A. Boeck, 1870. Crustacea amphipoda borealia et arctica, p. 9. 1. T. Malmi, A, Boeck, 1870. L. c. p. 9. Hab. Hardangerfjord, west coast of Norway. 2. T. Nordenskiöld!, n. sp. Diagn. Head as long as the first three pereional seg- ments. Dactylus of first pair of pereiopoda pedunculated, dactylus of second pair transformed into a complieated sensi- tive organ. Fifth pair as long as the pereion is deep, scarcely a third longer than sixth pair. Femur of seventh pair very broad, nearly circular, as long as the followiug joints together. Telson longer than peduncles of last pair of uropoda. Hab. Atlantic. Gen. 2. THAMYRIS, Spence Bate, 1860. Catalogue of the specimens of Amphipodous Cnistacea in the collect. of the British Museum, p. 335. 1. Th. rapax, Claus, 1879. iDie Gattungen und Arten du Platysceliden.> Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Stat. in Triest. Tom. 2, p. 182 (36). Hab. Cape of Good Hope. 2. Th. globiceps, Claus, 1879. L. c. p. 182 (36). Hab. Zanzibar. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11, K:0 16. 31 3. Th. cmsculum, Spence Bate, 1860. Catalogue of the specimens of Amphipodous Crustacea in the collect. of the British Museum, p. 333, pl. 53, fig. 2 and 3. Hah. ? 4. Th. antipodes, Spence Bate, 1860. L. c. p. 335, pl. 53, fig. 4. Hah. Antarctic Sea, Lat. 58° S, Long 172° W. 5. Th. insequipes, Dana, 1852. United States Exploring Expedition. CruBtacea. Vol. 2, p. 993, p. 68, fig. 5. Hal). Philippine Islands. 6. Th. elegans, n. sp. Diagn. Pereional segments raised, forming rolls, First joint of second pair of antennae shorter than second. Carpus of first pair" of pereiopoda with five equal sharp prominences along the hinder margin. Femur of seventh pair shorter than the following joints. Peduncle of first pair of pereiopoda as long as rami. Telson broad, rounded behind, longer than last pair of uropoda. Hah. Atlantic. Gen. 3. THAMNEUS, n. g. Diagn. Head small depressed. Body broad depressed. First two pair of pereiopoda similar to those in Thamyris. Femora of fifth and sixth pair small. Seventh pair perfectly developed with claw-forraed dactylus. Telson distinetly arti- culating with last nral segment. 1. Th. rostratus, n. sp. Diagn. Lower anterior pair of head produced into a broad flat rostrum, longer in the male than in the female. Subterminal pair of flagellnm of first pair of antennae three- jointed. Low^er margin of carpi of first two pairs of pereio- poda finely serrated, hinder margin provided with three strong prominences in first pair, and four in second. Sixth pair a little 32 c. BOVALLIUS, SVSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. loDcrer than fifth. Metacarpus of seventli pair produced beiow into two sharp processes, forming a kind of pincers with the dactylus. First pair of uropoda reach beyond tlie last. Telsou very broad, rounded, a little shorter than last pair of uropoda. Hah. South Atlantic; Cape of Good Hope. 2. Th. debilis, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 991, pl. fi8, fig. 3. Hah. Pacific. Gen. 4. LYC^A, Dana, 1852. L. c. p. 1017. 1. L. ochracea, Dana, 1852. L. c. p. 1017. Hah. Pacific. 2. L. pulex, Marion, 1875. >Recherches sur les animaux inférieures de la baie de Mai-seille.» Ann. des. Sci. nat. Sixieme serie. Zoologie. Torne l:re, p. 3. pl. 2. fig. 2. Hah. Mediterranean. 3. L. similis, Claus, 1879. »Die Gattungen und Arten der Platysceliden.> Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Stat. in Triest. Tom 2, p. 185 (39). Hah. Mediterranean. 4. L. robusta, Claus, 187i>. L. c. p. 186 (40). Hah. Mediterranean. 5. L. nasuta, Claus, 1879. L. c. p. 185 (39). Hah. Indian Ocean. 6. L. serrata, Claus, 1879. L. c. p. 185 (39). Hah. Indian Ocean. BIHANG TILL K. SV. VET.-AKAi). HANDL. BAND 11. N:0 16. 3o 7. L. Stebbingi, n. sp. Diagn. Body smootli. Dactyli of first two pairs of pereio- poda shorter than half the metacarpi. Third and fourth paire robust. Genu of fifth pair narrow, not tumid; tibia verv dilated. Femur of seventli pair elougate, longer than broad. Hab. Tropical parts of Atlantic. (t en. 4. PARALYCJEA, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 186 (40). 1. P. gracilis, Claus, 1879. L. c. p. 186 (40). Diagn. Body smootli. Head twice deeper than body. First two pairs of pereiopoda slcnder, elongate, with narrow, not serrated carpi. Third and fourth pairs slender. Femur of fifth pair elongated, narrow, longer than the three succeed- ing joints. Tibia of sixth pair with a serrated process. Peduncles of first pair of uropoda twice as long as broad; exteriör ramus longer than interiör. Interiör ramus of second pair coalesced with the peduncle. Exteriör ramus of last pair as long as the interiör. Hal). Tropical parts of Atlantic. 2. P. Newtoniana, n. sp. Diagn. Body delicately sculpturated. Head a third deeper than body. First two pairs of pereiopoda robust, with carpi sliort, dilated, obtusely serrated. Third and fourth pairs robust, with tibiffi and carpi broad. Femur of fifth pair broad, irregularly ovate, shorter than tlie three succeeding joints. Tibia of sixth pair without process. Peduncle of first pair of uropoda un- commonly broad, scarcely a fourth longer than broad; exteriör ramus shorter than interiör. Interiör ramus of second pair free, not coalesced with the peduncle. Exteriör ramus of last pair scarcely longer than half the interiör. Hab. Indian Ocean. 34 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERITDEA. Gen. 5. PSEUDOLYC^A, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 187 (41). 1. P. pachypoda, Claus, 1879. L. c. p. 187 (41). Hah. Mediterranean. Gen. 7. SIMORHYNCHUS, Claus, 1871. »Untersuchuogen iiber den Bau und die Verwandtschaft der Hyperiden.> Nachrichten von der Köngl. Gesellschaft der Wissenschaften und der G. A. Universität zu Göttingen, 1871, N:o 5, p. 156. 1. S. antennarius, Claus, 1871. L. c. p. 156. Hab. Pacific. 2. S. Lilljeborgi, n. sp. Diagn. Heud rounded, not rostrate. Pereiopoda short and robust. Carpus of first pair broad, rounded. Carpus of second pair dilated, armed with long bristles. Metacarpus of sixth pair finely scrrated. Peduncle of first pair of uropoda shorter than rami. Interiör ramus of second pair coalesced with the peduncle. Exteriör ramus of last pair longer than half the interiör. Hab. Tropical parts of Atlantic. Family 13. OXYCEPHALIDJE, Spence Bate, 1862. Diagn. Head long, produced anteriorly into a rostrum. Eyes large, not occupying the whole head. First pair of an- tennas fixed at the under-side of the head in a special groove between the rostrum and the eyes; first joint of flagellum tumid, the rest subterminal, few-jointed. Second pair fixed at the under hinder corner of the head, angularly folded (ef) or wanting (9). Pereiopoda are walking legs. Seventh pair complete or rudimentary. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 35 Gen. 1. GLOSSOOEPHALUS, n. g. Diagn. Head anteriorly produced into a thick, rounded, tongue-sliaped rostrum. Tibia, carpus and metacarpus of fifth pair of periopoda very dilated, not tumid. Uropoda short and broad. 1. G. Milne-Edwardsi, n. sp. Diagn. Metacarpus of first pair of pereiopoda scarcely produced, posterior margin sraooth. Third pair longer than tourth; fifth pair longer than sixth. Seventh pair longer than fe mur of sixth. Hah. Tropical parts of Atlantic. 2. G. spiniger, n. sp. Diagn. Metacarpus of first pair of pereiopoda produced into a sharp process, posterior margin armed with a strong, fharp tooth. Third and fourth pairs equal in length, fifth and sixth pairs equal in length. Seventh pair shorter than femur of sixth. Hah. Indian Ocean. (}en. 2. OXYCEPHALUS, H. Milne-Edwards, 1830. »Extrait de Recherches pour servir å THistoire naturelle des Crustacés amphipodes». Ann. des Sciences naturelles. Torne 20:me, p. 396. 1. O. piscator, H. Milne-Edwards, 1830. L. c. p. 396. Diagn. Body smooth. Rostrum shorter than half the rest of the head. Anterior corners of carpi of first two pairs of pereiopoda not enlarged. Seventh pair longer than femur of si.xth. Inferior margins of pleonal segments even. First ural segment longer than telson. Telson longer than last pair of uropoda. Hah. Atlantic, ]\[editerranean. Indian Ocean, Pacific. 2. O. Clausi, u. sp. Diagn. Body tuberculated. Rostrum about half as long as the rest of the head. Anterior corners of carpi of first 36 c. BOVALLIIS, SYSTE^rATICAL LIST OF THE AMPHIPODA HYPERIIDF.A two pairs of pereiopoda enlarged beyond tlie bases of the dactyli. Seventh pair longer than feniur of sixth pair. Inferior margiu? of pleonul segments produced downwards into a spiue. Last ural segment as long as telson. Rami of second pair of uro- poda serrated. Telson longer than last pair of uropoda. Hab. Atlantic, Mediterranean, Indian Ocean, Pacific. 3. O. tuberculatus, Spexce Bate, 1862. Catal. Amph. Orust, of the British Musemu, p. 343, pl. 54, fig. 5. Diagn. Body tuberculatod. Anterior corners of carpi of second pair of pereiopoda enlarged beyond the bases of dac- tyli. Four succeeding pairs subequal. Seventh pair shorter than femur of sixth. Inferior margins of pleoual segments even. Last ural segment longer than telson. Rami of se- cond pair of uropoda serrated. Hab. Cape of Good Hope. 4. O. pectinatus, n. sp. Diagn. Body smooth. Head as long as pereiou; rostrum as long as a third of the rest of the head, sharppointed. Inner margins of carpi and metacarpi of first two pairs of pereiopoda strongly pectinated. Seventh pair longer than femur of sixth pair, with a short metacarpus. Last ural segment twice as long as telson. Telson as long as last pair of uropoda. Hab. Subtropical parts of Atlantic, Indian Ocean. 5. O. latirostris, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arbeiten aus dem Zool. Inst. der Universität Wien und der Zool. Station in Triest. Tom. 2. p. 193 (47!. Hab. Lagos, South Atlantic. 6. O. porcellus, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arbeiten aus dem Zool. Inst. der Universität Wien und der Zool. Station in Triest. Tom. 2, p. 194 (48). Hab. Zanzibar. BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 37 7. O. pronoides, n. sp. Diogn. Body compressed, smootli. Head shorter than pereion; rostrum a little shorter than tlie rest of the head, sharp-pointed. First pair of pereiopoda not cheliform; inferior margin of carpus strongly denticulated; dactylus very short. Second pair subchelifnrm: inferior margin of carpiis denticu- lated; dactylus very short. Femur of sixth pair with the genu articulating subterminally. Sevcnth pair as long as femur ol sixth. Last ural segment almost as long as telson. Peduncles of first pair of uropoda a little longer than rami. Telson very long, much longer than last pair of uropoda. Hah. Caribbean Sea. 8. O. Steenstrupi, n. sp. JJiayii. Body compressed, smooth. Head longer than pereion; rostrum short, sharp-pointed, as long as a third of the rest of the head. First two pairs of pereiopoda subcheli- form, inner margins of carpi and metacarpi smooth, not serrated. Seventh pair much longer than femur of sixth. Last ural segment as long as telson. Interiör rami of uropoda not coa- lesced with the peduncles. Peduncles of first pair longer than rami. Telson long, much longer than last pair of nropoda. Hab. Atlantic. 9. O. longiceps, Claus, 1879. »Die Gattungen und Arten der Platyscelideu. » Arbeiten aus dem Zool. Inst. der Universität Wien und der Zool. Station in Triest. Tom. 2, p. 194 (48). Hab. Zanzibar. 10. O. typhoides, Claus, 1879. L. c. p. 19.5 (49). Hah. Zanzibar, Mediterranean. 11. O. scleroticus, H. Streets, 1878. »Pelagic Amphipoda.j Proc. of the Acad. of Nat. Hist. of Philadel- phia, 1878, p. 283, pl. 2, fig. 3. Hab. Tropical parts of Pacific, Indian Ocean. 38 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. Gen. 3. LEPTOCOTIS, Streets, 1877. »Contributions to the Natural history of the Hawaiian and Fanning Islands and Lower California.» Bulletin of the United States National Museum, 1877, N:o 7, p. 137. 1. L. Lindströmi, n. sp. Diagn. Body slender, smooth. Head longer than pereioc ; rostrum long, slender, sharp-pointed, a little shorter thau the rest of the head. First two pairs of pereiopoda subcheliform; inner margins of carpi and metacarpi strongly denticulated. Seventh pair a little shorter than femur of sixth pair. Last ural segment twice as long as telson. Peduncles of first two pairs of uropoda about twice as long as the exteriör rami. Interiör raraus of first pair, and exteriör ramus of last pair minute, reduccd. Interiör ramus of last pair coalesced with the peduncle. Telson long, narrow, longer than last pair of uropoda. Hah. Tropical parts of Atlantic. 2. L. tenuirostris, Claus, 1871. »Untersuchungen iiber den Bau und die Verwandschaft der Hyperiden.» Nachrichten von der K. Ges. der Wissensh. und der G. A. Univ. zu Göttingen 1871, p. 1-55. Hah. Pacific, Gilolo-passage. Gen. 4. TULLBERGELLA, u. g. Diagn. Head anteriorly produced into a short sharp, wedge-shaped rostrum. Body thick and broad. First two pair? of pereiopoda strongly cliclate. Femora of fifth and sixth pairs broadly dilated. Seventh pair rudimentary. Urus and uro- poda short; interiör rami not coalesced with the peduncles. 1. T. cuspidata, n. sp. Diagn. Body broad, smooth. Head much shorter thau pereion; rostrum broad, sharp-pointed, longer than half the rest of the head. First two pairs of pereiopoda subcheliform; inner margins of metacarpi sharply serratcd, those of carpi minutely serrated. Femur of sixth pair posteriorly produced into a strong sharp process. Seventh pair as long as femur of sixth. Posterior corners of the last pleonal segment pro- BIHA.NG TILL K SV. VET.-AKAD. HAXDL. BAND. 11. X:0 16. 39 produced backwards into a strong sharp process. Last ural segment as long as telson. Peduncles of uropoda shorter than rami. Telson broad, as long as last pair of uropoda. Hah. Indian Ocean. Gen. 5. CALAMORHYNCHUS, H. Streets, 1878. sPelagic Amphipoda.» Proc. of the Acad. of Nat. Hist. of Philadelphia 1878, p. 285. 1. C, pellucidus, H. Streets, 1878. L. c. p. 285, pl. 2, fig. 5. Hah. Tropical parts of Pacific. Gen. 6. RHABDONECTES, n.i) Diagn. Body verv clongated, rodlike. Head elongated, with a distinct neck, and a very long, needle-shaped rostrum. Tibiae and carpi are linear, but periodically intumesced in the female. Seventh pair rudimentary. Ovitectrices wanting. Peduncles of uropoda very elongated and narrow. Telson very long, needle-shaped. 1. Rh. armatus, H. Milne-Edwards, 1840. Histoire naturelie des Crustacés. Torne 3:me, p. 101. Diagn. Head together with the rostrum longer than the rest of the animal. Epimeral of first pair of pereiopoda rounded below. Hinder corners of epimerals of seventh pair rounded. First ural segment shorter than last pleonal seg- ment. Second pair of uropoda shorter than last ural segment. Last pair much longer than first. Telson much longer than last pair of uropoda. Hah. Indian Ocean, Pacific, Atlantic. '^ 2. Rh. Whitei, Spence Bate, 1862. Catal. Amph. Crust. of the British Museum, p. 345, pl. 54, fig. 7. Diagn. Head together with the rostrum shorter than the rest of the animal. Epimeral of first pair of pereiopoda produced an- The name has been substituted for the old name Pihabdosoma, as this latter was already preoccupied by Dumeril for an Ophidian genus. 40 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. teriorlj, cornuiform; hinder corners of epimerals of seventh pair produced downwards, more or less sliarppointed. First ural seg- ment longer than last pleonal segment. vSecond pair of uro- poda longer than last ural segment. Last pair scarcely longer than first. Telson scarcely longer than last pair of uropoda. Hab. Indian Ocean, Pacific, Atlantic. Family 14. PRONOIDJ], Claus, 1879. Diagn. Head large, not deeper than the body, a little produced anteriorly. Eyes large, occupying the wholc sides of the head. First pair of antennas fixed at the under-side of the head; first joint of flagellum tumid, the rest of flagellum subterminal. The second pair fixed at the under-side of the head, angulated (Prouoe) or angularly folded. Mandibles with palp. Femora of the fifth and sixth pairs of pereiopoda broad but not transformed. Seventh pair reduced. Gen. 1. PRONOÉ, Guékin-jNIeneville, 1836. sDcscription de quelques genres nouveaux de Criistacés appartenant i la famille des Hypériues. » ilagazin de Zoologife. Sixiéme Année, Classe 7, p. 6. 1. P. capito, Guérin-Méneville, 1836. L. c. p. 7; pl. 17, fig. 3. Hah. Indian Ocean, Pacific. Gen. 2. EUPRONOÉ, Claus, 1879. >Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool, Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 172 (26). 1. E. maculata, Claus, 1879. L. c. p. 172 (26). Hab. Zanzibar. BIHANG TILL K. SV. VET.-AKAD. HAXDL. BAND 11. X:0 16. 41 2. E. minuta, Clau^, 1879. L. c. p. 172 (26). Hah. Pacific. 3. E. brunnea, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 1015, pl. 69. fig. 5. Hab. Atlantic, Indian Ocean. 4. E. macrocephala, n. sp. Diagn. Heau very large, longer than the whole pereion Carpal process of" second pair of pereiopoda as long as half the metacarpus, broadly rounded. Carpus of sixth pair not produced into a process. Femur of seventh pair with a short, round appendicular joint. Last segment of virus longer than broad. Interiör raraiis of first pair of uropoda serrated, longer and broader than the exteriör. Hab. South Atlantic. 5. E. ornata, u. sp. Diagn. Head mediocre, as long as the first four pcreional segments. Pereional segments raised, forming rolls. Carpal pro- cess of second pair of pereiopoda longer than half the meta- carpus, sharp-pointed. Femur of fifth pair smooth. Femur of seventh pair triangulär, with a long appendicular joint. Last segment of urus as long as broad. Interiör ramus of first pair of uropoda as long as the exteriör. Hab. Madeira. Gen. 2. AMPHIPRONOÉ, Spence Bate, 1862. Catal. Amph. Crust. of the Bvitish Museum, p. 335. 1. A. cuspidata, Spence Bate, 1862. L. c. p. 336, pl. 53, fig. 5. Hab. Cape of Good Hope. 42 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYPERIIDEA. Gen. 3. PARAPRONOÉ, Claus, 1879. >Die Gattungen und Arten der Platysceliden. > Arb. aus dem Zool. Inst. der Univ. "Wien und der Zool. Station in Triest. Tom. 2. p. 175 (29). 1. P. crustulum, Claus. L. c. p. 177 (31). Hab. Mediterranean, Atlantic, Indian Ocean. 2. P. parva, Claus, 1879. L. c. p. 177 (31). Hab. Zanzibar. 3. P. agilis, n. sp. Diagn. Head anteriorly produced downwards. Carpal process of second pair of pereiopoda longer than half the metacarpus, sharppointed, strongly serrated. Femur of fifth pair very large, finely serrated at the anterior lower corner. Femur of seventh pair ovate. Telson twice longer than the peduncles of last pair of uropoda. Hab. Tropical parts of the Atlantic. 4. P. atlantica, n. sp. Diaqii. Body sculpturated. Head rounded. Carpal pro- cess of second pair of pereiopoda broad, sharppointed, longer than metacarpus. Tibiae of third and fourth pairs large, tumid; tibia of sixth pair with very short process. Femur of sixth pair without spinous process at apex. Femur of seventh pair with the appendicular part two-joiuted. Telson broad rounded, twice as long as the peduncles of last pair of uropoda. Hab. Atlantic. Family 15. PARASCELID^, Claus, 1879. Diagn. Head large, a little deeper than the body, anteriorly produced downwards. The eyes large, occupying the whole sides of the head. First pair of antennas fixed at the under-side of the head; first joint of flagellum tumid, the rest of llagellum BIHANG TILL K. SV. VET.-AKAD. HANUL. BAND 11. X:0 16. 43 subterminal. The secoud pair fixed at the under-side of tlie head, angularly folded {(f) or reduced (9). Mandibles with palp. Fernora of fifth and sixth pairs of pereiopoda trans- formed into imperfect opercula. Seveuth pair not transformed. Gen. 1. THYROPUS, Dana, 1852. United States Exploring Expedition. Crustacea. Vol. 2, p. 1012. 1. Th. diaphanus, Daxa, 1852. L. c. p. 1013, pl. 69. figr. i. Hab. Tropical parts of Atlantic. 2. Th. sphaeroma, Cl.a.u8, 1879. »Die Gattungen und Arten du Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tora. 2. p. 16H (17). Hab. Zanzibar, Ombaai Strait. 3. Th. atlanticus, n. sp. Diagn. LoAver prodnced part of the head rounded. Last ioint of second pair of antenuai nearly as long as the pre- ceding joint. Carpi and metacarpi of first two pairs of pereiopoda not elongated, comparatively broad; dactyli equalling a third of the length of metacarpi. Exteriör ramus of last pair of uropoda half as long as the interiör. Hab. Atlantic. Gen. 2. PARASCELUS, Claus, 1879. »Die Gattungen und Arten der Platjsceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 164 (18). 1. P. Edwardsi, Claus, 1879. L. c. p. 164 (18). Hab. Atlantic. 44 c. BOVALLirS, SYSTEMATICAL I.IST OF THE AMPHIPOUA HYPERIIDEA. 2. P. typhoides, Claus, 1879. L. o. p. 165 (19). Hab. Mediterrauean. 0. P. parvus, Clauis, 1879. L. o. p. 166 (20). Hab. Atlantic. 4. P. nasutus, u. sp. Diagn. Lower anterior part of tlie head producod into a strong, hooked process. Subtermiual part of flagelluin of first pair of antennse two-jointed, last joint tlie longest. Fourth joint of second pair a little shorter than third. First two pairs of pereiopoda with the lower hinder corners of carpi rounded, and armed wirth somc few long bristles. Feiniir of fifth pair broadly ovate; feniur of seveuth pair very large, broad, strongly curved, longer than the tive succeeding joints. Exteriör ramus of last pair of uropoda louger than half the interiör. Hab. West Indies. Gen. 3. SCHIZOSCELUS, Claus, 1879. >Die Gattungen und Aiten der Platysceliden.j Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 166 (20). 1. S. ornatus, Claus, 1879. L. c. p. 167 (21). Hab. Atlantic. 2. S. rapax, H. Milne-Edwards, 1830. »Extrait de Recherches pour servir ärHistoire naturelle des Crustacés amphipodes.» Ann. des Sciences naturelles. Torne 20:me. p. 395. Hab. Atlantic. Gen. 4. EUSCELUS, (;laus, 1879. >Die Gattungen und Arten du Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 168 (22). BIHANG TILL K. SV. VET.-AKAI). HAXDL. BAXi). 11. N:0 16. 45 1. E. robustas, Claus, 1879. L. c. p. 168 (22). Hah. Zanzibar. Family 16. EUTYPHID^, Dana, 1852. Diat/n. Body verv broad. Head large, deeper than the body, a little produced anteriorly. Eyes large, occupying the whole sides of the head. First pair of antennas fixed at the under-side o f the head; first joint of fiagelliim tumid, the rest of flagellum subterminal. Second pair fixed at the under-side of the head. angularly folded ((/") or wanting ($). Mandibles with palp. Femora of fifth, sixth and seventh pairs of pereiopoda trans- formed into perfect opercula. Seventh pair reduced. Gen. 1. EUTYPHES^), Claus, 1879. »Die Gattungen uncl Arten der Platysceliden.» Arb. ans dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 151 (5). 1. E. ovoides, Eisso, 1816. Histoire naturelle des Crustacés des environs de Nice. p. 122, pl. 2, fig. !». f/ab. Atlantic, Mediterranean. 2. E. armatus, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 156 (10). Ilab. Atlantic, Indian Ocean, Pacific. 3. E. globosus, Claus, 1879. L. c. p. 158 (12). Hah. jMediterranean. 4. E. ferus, H. Milise-Edwakds, 1830. »Extrait de Recherches pour servir ä THistoire naturelle des Crustacés amphipodes.» Ann. des Sciences naturelles. Torne 20:me. p. 395. pl. 11, fig. 8. Hab. Mediterranean, indian Ocean. ') Typhis must be corrected to Typhes. 46 c. BOVALLIUS, SYSTEMATICAL T,1ST OF THE AMPHIPODA HYPERIIDEA. i 5. E. forfex, u. sp. ' Diagn. Carpal process of first pair of pereiopoda much shorter than metacarpus, strongly serrated along both mar- gins. Carpal process of secoud pair nearly as long as meta- carpus, strongly serrated; both pairs provided witli long hairs. Tibiaä of third and fourth pairs vcry elongate; metacarpi deeply notched at the lower hinder corners, forming together with the dactyli a kind of pincers. Exteriör ramus of last. pair of uropoda longer than half the interiör. Hab. China Sea. Gen. 2. DITHYRUS, Dana, 1852. United States Exploring Expedition. Ciustacea. Vol. 2. p. 1009. 1. D. faba, Dana, 1852. L. c. p. 1010, pl. 69, fig. .3. }lab. Subtropical parts of Atlantic. 2. D. tenuimanus, Claus, 1879. »Die Gattungen iind Arten dei* Platysceliden.s Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p. 158 (12). Hab. Atlantic, Cape of (jood Hope. 3. D. crustulum, Claus, 1879. L. c. p. 159 (13). Hab. Zanzibar. 4. D. stellatus, u. sp. Diagn. Body smooth, adorued with some small, radiating, red sports. Two first pairs of pereiopoda robust; carpal pro- cess of first pair shorter than half the metacarpus, strongly serrated. Carpal process of second pair nearly as long as meta- carpus, strongly serrated. Femur of fifth pair excavated at the anterior margin. Femur of seventh pair bean-shaped, with only oue appendicular joiut. Peduncle of first pair of uro- poda not serrated. Exteriör ranius of last pair a little longer than half the interiör. IJab. Tropical parts of Atlantic. BIHAXG TILL K. SV. VET.-AKAD. HANDL. BAXD. 11. N:0 16. 47 Gen. 3. PARATYPHES, Claus, 1879. sDie Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Triest. Tom. 2, p, 159 (13). 1. P. maculatus, Claus, 1879. L. c. p. 160 (14). Hab. Atlantic, Cape of Good Hope. 2. P. Théeli, n. sp. Diagn. Body smooth, not spotted. Fourtli joint of se- cond pair of antennas scarcely half as loug as third. Fe mur of first pair of pereiopoda long, linear. Carpus of second pair a little dilated, not produced. Epimcral of fifth pair withourt spinous process. Exteriör ramus of last pair of uro- poda longer than half the interiör. Hah. Tropical parts of Atlantic. Gen. 4. TETRATHYRUS, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Htation in Triest. Tom. 2, p. 160 (14). 1. T. forcipatus, Claus, 1879. L. c. p. 160 (14). Hah. Atlantic, Cape of Good Hope. 2. T. rectang'ularis, n. sp. Diagn. Boody smooth, not sculpturated. Last joint of second pair of autennse shorter than half the preceding. Carpi of first two pairs of pereiopoda a little dilated, not pro- duced, as long as metacarpi; dactyli lowger than a third of metacarpi. Sixth pair with femur almost rectangular, the an- terior corner rounded ; dactylus wanting. Seventh pair with long, feebly curved femur, and the appendicular part five jointed. Hah. Indian Ocean. 48 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPOUA HYPERIIDEA. 3. T. inscriptus, u. sp. Diagn. Parts of body aud femur of fiftli pair of pereio- poda sculpturated. Last joints of second pair of antenn^e lon- ger than half tbe preceding. First two pairs of pereiopoda much stronger than in preceding species. Femur of sixth pair compartively small, rounded, dactyliis distinct. Femur of seventh pair with two-jointed appendicular part. Hah. Atlantic. Gen. 5. AMPHITHYRUS, Claus, 1879. »Die Gattungen und Arten der Platysceliden.» Arb. aus dem Zool. Inst. der Univ. Wien und der Zool. Station in Tiiest. Tom. 2, p. 161 (15). 1. A. bispinosus, Claus, 1879. L. c. p. 161 (15). Hah. Atlantic. 2. A. sculpturatus, Claus, 1879. L. c. p. 162 (16). Hah. Atlantic. 3. A. similis, Claus, 1879. L. c. p. 161 (16). Hah. JMediterranean. 4. A. inermis, n. sp. Diagn. Body smooth, not sculpturated. Last two joints of second pair of antennse shorter than the preceding joint. Epimeral of fifth pair of pereiopoda large, almost square, ■\vithout spinous process. Fcmora of fifth and sixth pairs ol" pereiopoda almost rectangular, with rounded corners. Femur of seventh pair long and uarrow, with two-jointed appendicular part. Feduneles of first two pairs of uropoda broad, a third longer than rami. Telson verv long and broad, rounded behind. Hah. Pacitic. BIHANG TTLL K. SV. VET.-AKAD. HANDL. BAND 11. N:0 16. 49 Contents: Fara. 1. Tyrouidas pag. 3. Tyro > K > 2. Lanceolidse » 5. Lanceola « > . 3. Vibilidae » 6. Vibilia > » " 4. Cyllopodidae > 11. Cyllopus » » Cyllias » 12. > 5. ParaphronimidsE » 13. Paraphi-onima « » s G. Thaumatopsid» > 14. Thaumatops » » » 7. MimonectidEe j 15. Mimonectes » » » 8. Hyperiidse » > Hyperia » 16. lulopis t 17. Hyperoche '. » 18. Tauria » 19. Hyperiella » » Parathemisto » 20, Euthemisto » 21. Themistella ■» 22. Phronimopsis » 23. s 1). PhronimidEe > » Dairella > 24. Phronima » 25. Phronimella » 26. > 10. Anchylomeridse » » Anchylomera » > Phrosina > 27. Primno » 28. > 11. Phorcidae » » Phorcus » > Lycseopsis » 29. 4 50 c. BOVALLIUS, SYSTEMATICAL LIST OF THE AMPHIPODA HYVERIIDEA. Fam. 12. Tryphtenidse pag. 30. Tryphasna > » Thamyris > » Thamneus > 31. Lycaea > 32. Paralycaea » 33. P.seudolyc8ea » 34. Siraorhynchus t.. » » > 13. O xycephalidae » 35. Glossocephalus > > Oxycephalus » > Leptocotis « 38. TuUbergella > » Calamorhynchus j 39. Rhabdonectes « » » 14. Pronolda; » 40. Pronoe > » Eupronoe » > Araphipronoe » 41. Parapronoe > 42. » l.l. Parascelidfe > >• Thyropus i 43. Parascelus » » Schizoscelus » 44. Euscolus » > > IG. Eutyphidae > 4"). Eutyphea » > Dithyrus » 46. l^aratyphes » 47. Tetrathyru.s » » Aiuphitbyrua » 48.