192 A. Alcock — Carcinological Fauna of India. [No. 2, 



Xenocarcimis tuberculatus, White. 



Xenocarcinus tuberculatus, White, P. Z, S., 1847, p. 119, and Ann. Mag. Nat. 

 Hist. (2) I., 1848, p. 221, and in Jukes' Voyage H. M. S. ' Fly,' Vol. II. p. 336. 



Xenocarcinus tuberculatus, Hess, Archiv. f. Naturges. XXXI. i. 1865, pp. 131 

 and 171. 



Xenocarcinus tuberculatus, A. Milne-Edwards, Nouv. Archiv. du Mus. VIII. 1872, 

 p. 253, pi. xii. fig. 1. 



Xenocarcinus tuberculatus, Miers, Zool. ' Erebus ' and ' Terror,' Crust., p. 1, pi. ii. 

 fig. 1, le. 



Xenocarcinus tuberculatus, Haswell, P. L. S., N. S. Wales, Vol. IV. 1879, p. 436, 

 and Cat. Austr. Crust., p. 8. 



Xenocarcinus tuberculatus, Ortmann, Zool. Jahrb. Syst., etc., VII. 1893, p. 40. 



Carapace elongate ovate-subcylindrical with the regions ill defined 

 and the surface more or less tuberculated. [Typically the tubercles 

 fall into distinct transverse rows]. The rostrum has the form of a long 

 coarse cylindrical beak, the apex of which is bifid, and the surface 

 densely covered with velvety hairs. 



The eyes are completely and almost immovably sunk in the sides 

 of the rostrum. 



The antennary flagella are much shorter than, and are completely 

 hidden by, the rostrum. 



The chelipeds and ambulatory legs are short and nodular, the latter 

 having curved strongly-toothed prehensile dactyli. The chelipeds are 

 hai'dly stouter, and are not much shorter, than the 2nd pair of legs, 

 which again ave much longer than the 3rd to 5th pair. The colours 

 described by White are " two or three waved longitudinal red lines on 

 the posterior half of the carapace, the inner line continued before the 

 e}-es." By A. Milne- Ed wards the colours of the carapace and legs are 

 said to be reddish stained with yellow. 



In a good spirit specimen the abdomen carapace and beak are dull 

 reddish brown, with a broad yellow stripe extending from the base of 

 the beak to the tip of the abdomen, and on either side of the carapace 

 a narrow sinuous yellow line; and the trunk-legs are yellow, more or 

 less banded and striped with dull brown. 



In the Museum collection are two females, one from Ceylon (34 

 fathoms), the other from the Andamans. The oue from Ceylon, which 

 is an egg-laden adult 15 millim. long, resembles as to its carapace and 

 rostrum, but not as to its legs, the figure in the Zoology of the ' Ei^ebus ' 

 and ' Terror ; ' and as to its legs, but not as to its carapace and rostrum, 

 the figure in Archiv. tin Mus. torn. VIII. 1872. The other, from the 

 Andamans, which is not adult, exactly resembles, as to its carapace, but 

 not as to its legs, the last cited figure. 



