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



spines the surface is perfectly smooth and polished, although there are 

 some tufts of stiff clean hairs. 



The rostrum, which consists of two very acute and slightly diver- 

 gent teeth, is about one-fourth the length of the carapace proper. 



The supra-ocular eave is produced forwards as a very acute spine, 

 the base of which is surmounted by a secondary spine. The cornea is 

 surmounted by a spinule. 



The chelipeds have the merus slightly, and the carpus strongly 

 spiny, and are equal to the carapace (without the rostrum) in length : 

 they are almost alike in the adults of both sexes, the fingers only of 

 the male differing from those of the female in being closely apposable 

 only in the distal half, instead of throughout. The ambulatory legs, 

 which are about equal to the chelipeds and to one another in length, 

 have the merua carpus and propodite spiny, and the dactylus stout, 

 claw-like, and denticulated on part of the posterior margin. 



In the Museum collection are an adult male and an egg-laden 

 female taken by myself, off the Ganjam Coast in 15-25 fms., from a 

 colony of Spongodes. The Spongodes which belongs to a species (I think 

 new) intermediate in character between S- cervicornis and 8 . pustulosa, W. 

 and S., is one of those with a brilliant white ccenosarc and pink zooids, 

 so that the crabs with their porcelain-white bodies, pink spines, and 

 piuk-banded legs were with difficulty detected. 



Dr. Henderson considers the above species to be closely related to 

 ScJiizophrys and Microphrys, but it appears to me to be much more 

 closely related to Pisa and Tylocarcinus. 



Tylocarcinus, Miers. 



Tylocarcinus, Miers, Journ. Linn. Soc, Zool., Vol. XIV. 1879, p. 664. (Pisa, Latr. 

 part. ; Pisa, Edw. part. ; ililnia, Stimpson part. ; Microphrys, Edw. part.) 



Carapace tuberculated, pyriform, without lateral spines. The 

 rostrum consists of two slender slightly divergent spines. 



The eye-stalks are short and are retractile, but not to such an 

 extent as to completely conceal the cornea. The commencing orbits are 

 formed by a supra-orbital eave, the anterior angle of which is produced 

 forwards as a spine roughly parallel with the rostrum, and of a strongly 

 cupped post-ocular process which, instead of being isolated, is in the 

 closest contact above with the supra-ocular eave and below with the 

 basal antennal joint. The basal antennal joint, which is of no great 

 breadth, has its antoro-external angle produced to form a sharp tooth, 

 which is not visible from above : the mobile portion of the antenna, 

 which is short, is completely exposed. 



