1899.] A. Alcock — Carcinohgical Fauua of India. 86 



(3) the fifth tooth of the an tero- lateral borders though smaller than 

 the others is by no means a rudiment : 



(4) the crest of the basal antenna-joint is armed with a row of 3 

 large spines like those of T. prymna. 



(5) the hands and fingers are like those of the var. savignyi : i.e., 

 the hand is distinctly costate, some of its inner surface is granular, and 

 the fingers are as long as the hand and have no particular channelling 

 of the inner surface. 



In the Indian Museum there is a single specimen from the Andaman 

 Islands : the length of the carapace is 22 millim., its breadth 35 millim. 

 This form is probably only a variety of T. admeta. 



66. Thalamita integra, Dana. 



Thalamita Integra, Dana, Proc. Ac. Nat. Sci. Philad. VI. 1852, p. 85 and U. S. 

 Expl. Exp. Crust, pt. I. p. 281, pi. xvii. figs. 6 a-d : Stimpson, Proc. Ac. Nat. Sci. 

 Philad., 1858, p. 39 : A. Milne Edwards, Archiv. da Mus. X. 1861, pp. 358, 367, and 

 in Maillard's Tile Reunion, Annexe F. p. 2 : Streets, Bull. U. S. Nat. Mus. VII. 1877, 

 p. 107: Hilgendorf, MB. Ak. Berl. 1878, p. 799: Eichters in Mobius Meeresf. 

 Maurit. p. 153 : Miers, Zool. H. M. S. Alert, pp. 518, 540, and Challenger Brachyura, 

 p. 195 : de Man, Journ. Linn. Soc, Zool., XXIT. 1887-88, p. 74 : Cano, Boll. Soc. 

 Nat. Nap. III. 1889, p. 215: Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, 

 p. 373 : Whitelegge, Mem. Austral. Mus. III. 1897, p. 138. 



Closely allied to T. admeta from which it can be recognized by the 

 following characters : — 



(1) the carapace is not quite so broad and is distinctly convex : it 

 is bare of tomentum and the transverse ridges are much less distinct, 

 the one that crosses the cardiac region being obsolescent or absent : 



(2) the crest of the basal antenna-joint has a sharp entire edge : 



(3) the surface of the chelipeds is smooth and polished : the costse 

 of the wrist are worn and in great part obliterated, and the usual 3 

 spines at the outer angle of this joint are indistinct blunt points : the 

 hand is quite smooth ; the inner border of its upper surface is crest-like 

 and bears two teeth, there is a blunt tooth in the usual place in front 

 of the apex of the wrist-joint, and in front of this are one or two blunt 

 tubercles ; there may also be a smooth ridge running along the distal 

 two-thirds of the lower border of the hand : 



(4) the 6th abdominal tergum of the male is much broader than 

 long. 



In the Indian Museum are two specimens — from Mergui and the 

 Andamans (besides a " Challenger" duplicate from Honolulu). 



57. Thalamita iiivestigatoris, n. sp. 

 Carapace about two-thirds as long as broad, covered wi 



with a velvet- 



