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Show 582 MR. L. A. BORRADAILE ON CRUSTACEANS [May 22, Cymo melanodactylus, Dana, U.S. Expl. Exped., Crust, i. p. 225, pi. xiii. fig. 1 (1852) ; Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 174 (1898). Cymo andreossyi var. melanodactylus, Miers, Zool.' Alert,' p. 557 (1884). De Haan appears to have named this variety without describing it. Funafuti; one male, one female. Rotuma; one female. Genus XANTHIAS Rathbun, 1897. Xanthodes, Dana, Proc. Ac. N. Sci. Philad., May 1852, p. 75; Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 156 (1898). Xantho, Ortmann, Zool. Jahrb. vii. Syst. p. 443 (1893), in part. Xanthias, Bathbun, Proc. Biol. Soc. Wash. xi. p. 165 (1897). 29. XANTHIAS LAMARCKI (H. M.-Edw.), 1834. Xantho lamarckii, H. M.-Edwards, H. N. Crust, i. p. 391 (1834). Xanthodes lamarckii, A. M.-Edwards, Nouv. Arch. Mus. ix. p. 200, pi. vii. fig. 3 (1873); Whitelegge, Mem. Austral. Mus. iii. 2, p. 130 (1897); Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 157 (1898). Funafuti; one female. Botuma; one male. 30. XANTHIAS NOTATUS (Dana), 1852. Xanthodes notatus, Dana, Proc. Ac. N. Sci. Philad. 1852, p. 76 ; id. U.S. Expl. Exped., Crust, i. p. 178, pi. viii. fig. 12 (1852); Alcock, Journ. As. Soc. Beng. lxvii. 2, i. p. 158 (1898). Botuma; one female. 31. XANTHIAS PARVUS, n. sp. (Plate XLI. fig. 5.) Diagnosis: " A Xanthias with the carapace minutely granular, clearly delimited into the areas characteristic of the genus; the antero-lateral edge on each side with four teeth, of which the first two are very low and blunt and the last two somewhat sharper; the front fairly straight, rather deeply notched in the middle line, and separated at its outer ends by shallow notches from the swollen orbital rims ; chelipeds unequal, unlike, the larger with the hand more swollen and the fingers less gaping than the smaller, the wrist in both irregularly and coarsely rugose ; the hand covered above and outside with fairly sharp conical tubercles, smooth below and inside; the cutting-edges of the fingers close set with bluntish rounded teeth, which in the large hand almost entirely fill up the gap between the fingers, but in the smaller leave a space towards the base of the fingers, the outside of the fingers grooved ; the walking-legs stout, with a strong fringe of hairs on the upper edge, the last three joints hairy on, the outside, the dactylopodite |