1899.] A. Alcock — Garcinological Fauna of India. 77 



the arched inner supra-orbital angles each of which is as broad as any 

 two of the true frontal lobes. 



Antero-lateral borders cut into five clawshaped teeth of nearly 

 equal size, or slightly decreasing in size from before backwards. 



Posterior border of dorsal surface of carapace forming a curve 

 with the postero- lateral borders, its length about one-third the greatest 

 breadth of the carapace. 



Orbits without any dorsal inclination, their major diameter about 

 one-fifth the width of the interorbital space : the inner angle of their 

 lower border dentiform and fairly prominent. 



The basal antenna-joint is about two-ninths the greatest breadth of 

 the carapace in extent, its orbital prolongation is in nearly the same 

 straight line with its stem, and is traversed by a granular ridge. 



Chelipeds a little unequal, the larger one in the male being about 

 2J times the length of the carapace, with a nearly smooth surface. 

 Anterior border of arm with 3 enlarged spines and some granules, post- 

 erior border with a few squamiform granules only. Inner angle of 

 wrist stoutly dentiform, outer surface with three teeth imperfectly 

 united by costae. Hand with five spines ( most of which are blunt and 

 sometimes become obsolescent), in two rows, on the upper surface — 

 those of either row being more or less connected by a ridge which is in 

 part granular : there are no other distinct ridges on the hand except 

 a faintish one in the neighbourhood of the immobile finger. The fingers 

 of the larger hand are not quite as long as the somewhat swollen palm, 

 those of the smaller hand are as long as their palm. 



Legs smooth, unarmed except for the usual spine at the far end of 

 the posterior border of the merus of the last pair and for 2 or 3 den- 

 ticles (which, however, are often absent) on the posterior border of the 

 propodite of the last pair. 



The 6th abdominal tergum of the male is broader than long and 

 has gently curved sides. 



Large males in the Indian Museum collection have the carapace 

 about 40 millira. long and about 60 millim. broad. 



In the Indian Museum are 34 specimens, from the Andaraans, 

 Mergui, Bombay, Karachi and the Persian Gulf (besides specimens from 

 Peuaug, Singapore, Australia, and Samoa). 



47. Thalamita DansB, Stimpson. 

 Thalamita crenata, Dana, U. S. Expl. Exp. Crast. pt. I. p. 282, pi, xvii. figs. 



Thalamita Danx, Stimp.son, Proc. Ac. Nat. Sci. Philad. (1858) 1859, p. 39: 

 A. Milne Edwards, Archiv. du Mus. X. 1861, pp. 366, 367, pi. xxxvi. fig. 1 : Miers, 

 Cat. Crust. New Zealand, p. 29 : Hilgendorf, MB. Ak, Berl. 1678, p. 800 : Richters 



