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Show 1900.] FROM SINGAPORE AND MALACCA. 735 says that the pterygostomiau regions are notgrauulous ; in all specimens they are distinctly granulated. Dim. 0*30-5x19-5. d" 29-5x19. d* 26-5x17. $28-5x18-5. $ 27-75 x 17-5. XX. Genus CYCLOXANTHUS A. M.-Edw. 37. CYCLOXANTHUS LINEATUS A. M.-Edw. (?) Cf. Cycloxanthus lineatus, A. M.-Edw. Nouv. Arch. Mus. t. ix. p. 209, pi. vi. f. 5 (1873); Miers, ' Alert' Crust, p. 212 (1884). Hab. Uncertain. A small male. I cannot definitely refer this specimen to M.-Edwards's species. The carapace is not at all smooth ; there is a distinct low carina on each side over the branchial regions, extending from the last tooth nearly to the middle line; two low swellings on the mesogastric, and one on the cardiac regions. The whole surface, moreover, is finely and closely granulated. Colour a dull grey ; legs yellow; fingers of chelipedes brown. This individual is identical with the two specimens obtained by the ' Alert.' Dim. 7*5x5-5. XXI. Genus EUXANTHUS Dana. 38. EUXANTHUS HUONII Jacq. et Lucas. Cancer huonii, Jacq. et Lucas, Voyage au Pole du Sud, Crust. p. 16, pi. iv. f. 1 (Hombron et Jacquinot, tome iii. 1853). Euxanthus huonii, A. M.-Edw. Nouv. Arch. Mus. t. i. p. 290 (1865) ; Miers 'Alert' Crust, p. 204 (1884). Hab. Singapore; littoral, from among stones and dead coral. One male. A. M.-Edwards thinks it possible that E. huonii and E.sculptilis Dana may be identical. Mr. Miers, commenting on this, points out that the black coloration of the fingers extends on to the hand in M.-Edwards's figure, and also in his ('Alert') specimen. This, he adds, is not figured by Dana, nor does it occur in two Museum specimens one of which has been designated E. huonii by A. M.-Edwards, but which Mr. Miers refers provisionally to E. sculptilis. Now, in this example from Singapore, the colour is limited to the fingers also; yet there can be no doubt it is identical with E. huonii, and not with E. sculptilis, for two reasons-firstly, the fingers are not denticulate above : and secondly, the posterolateral margins are deeply concave, while in Dana's figure they are represented as nearly straight. For these reasons, also, I should still regard E. huonii and E. sculptilis as distinct. I was unfortunately unable to obtain the specimens referred to by Mr. Miers for purposes of comparison (vide footnotel). Dim. 18-5x13. 1 The two specimens of Euxanthus sculptilis to which Mr. Miers refers (op. cit. p. 204) were not in the collection when I made a MS. catalogue of the Brachyura in 1890.-P. J. B., Nat. Hist. Mus. 16 April, 1900. 48* |