568 MH. L. A. BORBADAILE ON CRUSTACEANS [May 22, Plate XXXIX. Exosphceroma gigas, p. 553. n.s. Lines showing actual length and breadth of specimen figured. a.s.,a.i. First and second antenna?. e.p., l.s. Epistome and upper lip. m., m. Mandibles. The right mandible from the outer side ; the left mandible from the inner side, without its palp. l.i. Lower lip. iruc. 1, mx. 2. First and second maxillae. mxp. Maxillipeds. prp. First peraeopod (third trunk-leg). Per.s. 7 (S . Appendages of male on ventral margin of seventh peraeon-segment. pip. 2 c$ . Appendage of male on inner side of second pleopod. The mouth-organs are all drawn to the same scale, but with higher magnification of the apical spines and setas of the first maxilla, and of one setiform spine of the second maxilla. A uniform but lower scale applies to the two antennae, the peraeopod, and the male appendages. 2. On some Crustaceans from the South Pacific. — Part IV. The Crabs. By L. A. Borradaile, M.A v F.Z.S., Lecturer in Natural Sciences of Selwyn College, Cam-bridge. [Received March 31, 1900.] (Plates XL.-XLII.) The collections described in the following report were made in the islands of Funafuti (Ellice group), Eotuma, and Fiji by Mr. J. Stanley Gardiner, to whose kindness I am indebted for permission to examine them. They contain altogether examples of 77 species, of which seven appear to be new to science. All the known species have been already recorded from the Indo-Pacific region, and the new ones present no particularly remarkable features, although it has proved impossible to place one of them in any known genus, and a new division of that rank has been established for it. The Funafuti collection contained examples of the following species : — 1. Cryptodromia hilgendorfi de Man. 2. Ebalia erosa (A. M.-Edw.). 3. Calappa hepatica (Linn.). 4. Xenocarcinoides rostratus, n. sp. 5. Mencethiits monoceros (Latr.). 6. Goniocaphyra truncatifrons de Man. 7. Carupa Iceviuscula Heller. 8. Neptunus (Achdous) granulatus (H. M.-Edw.). 9. Thalamita admete (Herbst), var. edwardd, n. nom. 10. Thalamita Integra Dana. 11. Pseudozius inor nat us Dana. 12. Pseudozius caystrus (Ad. & Wh.). 13. Pilumnus jjrunosus Whitelegge. 14. Cymo andreossyi (Aud.), var. melanodactyhi.i Dana. 15. Xanthius lamarcki (H. M.-Edw.).