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 merus 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 Granjam 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$. pustulosa , W. 
and S., is one of those with a brilliant white coenosarc and pink zooids, 
so that the crabs with their porcelain-white bodies, pink spines, and 
pink-banded legs were with difficulty detected. 
Dr. Henderson considers the above species to be closely related to 
Schizophrys 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., Yol. XIV. 1879, p. 664. (Pisa, Latr. 
part .; Pisa, Edw. part.; Milnia, 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 antero-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. 
