1899.] A. i.\lcock — Carcinological Fauna of India. 163 



than the propodite, that shuts down against the distal border of the 

 latter like the blade of a knife. 



The branchial formula of Hypsophrys is exactly the same as that 

 of Homola. 



25. Hypsophrys superciUosa, Wood- Mason. 



Hypsophrys superciUosa, Wood-Mason, Ann. Mag. Nat. Hist., March 1891, p. 269 : 

 Illustrations of the Zoology of the " Investigator," Crust, pi. xiv. figs. 4, 4a, 1895 : 

 Alcock, Investigator Deep Sea Brachyura, p. 14. 



Rostrum simply pointed. Linea anomurica rather indistinct. 



Four small spines or teeth on the anterior (orbital) border of the 

 carapace, two being far apart at the base of the rostrum and one at 

 either outer orbital angle. Two, or all four, of these teeth may be 

 obsolescent or obsolete. 



Lateral borders of dorsum of carapace not defined, except by a 

 single isolated spine on the hepatic region. Gastric region sharply 

 subdivided into three subregions, of which the lateral are somewhat 

 nodular. Two or three spines on the subhepatic and suborbital 

 region, the innermost of which is " antennal," also sometimes a few 

 spinules. 



Eyes well formed and facetted, but pale. Antennal fla.gella about 

 half again as long as the carapace. 



The pediform external maxillipeds have their surfaces and edges 

 devoid of spines. 



Chelipeds slender, but much more massive than the legs, about 

 half a hand-length shorter than the first pair of legs in the adult male : 

 spines and spinules in rows on edges and on both inner and outer sur- 

 faces of arms, wrists and hands : fingers about three-fourths the length 

 of the palm. 



The second pair of legs, which are slightly longer than the first 

 and third and considerably more than twice the length of the fourth, 

 are slightly more than three times the length of the carapace. 



In the first three pair the meropodites are compressed, with the 

 anterior border spiny and the posterior border much less strongly and 

 profusely spiny; the other joints are slender and unarmed, except for 

 a few articulating spinelets at the far end of the posterior border of the 

 propodite and in the basal half of the posterior border of the dactylus ; 

 the dactylus is slightly shorter than the propodite. 



The fourth (dorsal) pair are very slender and are unarmed except 

 at their cheliform ending : their propodite is many times longer than 

 the dactylus. 



The terminal joint of the male abdomen is bluntly triangular. 

 J. II. 21 



