328 A. Alcock — Carcinological Fauna of India. [No. 3, 



The fron to orbital region is vertically deflexed and almost invisible 

 in a dorsal view. 



Epibranchial and cardiac regions tumid, circumscribed by deepisli 

 grooves. 



Legs subcylindrical, with a finely frosted and pubescent surface : 

 the third pair, which are slightly the longest, are about 2| times the 

 length of the carapace: the posterior (lower) border of the merus of the 

 first two pairs is spinulose. 



Colours in spirit, light yellow, eyes black. 



A single female, without chelipeds, from the Andaman Sea, 490 f ms. 

 The carapace is 8 millim. long, and the same in breadth. 



Camatopsis, Alcock. 



Camatopsis, Alcock, Investigator Deep Sea Brachyura, p. 75. 



Carapace deep, rudely sub-semicircular, hardly broader than long, 

 strongly convex fore and aft and declivous anteriorly : its anterolateral 

 borders short sharp and entire, its postero-lateral borders long sharpish 

 and slightly convergent anteriorly: its only markings are two longitudi- 

 nal grooves hardly visible on the undenuded carapace, that mark off the 

 epibranchial regions. 



Front considerably less than a fourth the greatest breadth of the 

 carapace, obscurely bilobed ; the whole fronto-orbital border is about 

 half the greatest breadth of the carapace. 



Orbits large, deep, and normally cut in the anterior border of the 

 carapace : eyestalks large, tumid, conical, almost immovably fixed in the 

 orbits : eyes reduced to a speck of pigment placed on the under surface 

 of the tip of their stalks. 



Antennulary fossa? small, and filled entirely by the basal antennulary 

 joint, to the complete exclusion of the large flag ellum. 



The small basal antenna-joint is wedged in between and beneath 

 the eyestalk and antennule, the second joint hardly reaches to the 

 front, the flagellum is large and considerably longer than the orbit. 



The epistome is of considerable width fore and aft, especially at 

 its middle, and though sunken, is well separated from the palate. The 

 buccal cavern is square, though rather broader in front than behind, 

 and is almost entirely covered by the external maxillipeds. These have 

 the merus as long as, and markedly broader than the isch'nim, owing to the 

 strongly convex bulge of the outer border of the merus : the palp, which is 

 of good size, is jointed to the antero-internnl angle of the merus. 



The chelipeds are moderately massive and in the male the hands 

 are unequal. The arm is short and trigonal, the wrist rather long 

 narrow and crooked. 



