75 



Colours in spirit french-grey, fingers much darker grey. 



A single female specimen, from off the Travancore coast 430 fms., has the 

 carapace 13 miUim. long and 16 millim. broad. 



This species is closely related to Pilumnoplax Jieterochir (Studer) Miers, but 

 is distinguished from it by the entire and more prominent front, by the absence 

 of transverse markings on the carapace, by the longer legs, and by the smooth- 

 ness of the chelipeds and legs. 



From Pilwmnophhe ahijssicoU Miers, which it also closely resembles, it is dis- 

 tinguished by the smooth carapace (to the naked eye), by the tumed-dowu milled 

 edge of the front, by the spinule on the postero-lateral border, by the fissured 

 upper-margin of the orbit, and by the double spine at the inner angle of the 

 wrist. 



Subfamily Bhizopinae. 



Camatopsis. 



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

 convex fore and aft and decHvous anteriorly, nearly flat from side to side across the 

 branchial regions : its antero-lateral borders short sharp and entire, its postero- 

 lateral borders long sharpish and parallel or slightly divergent : its only markings 

 are two longitudinal 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. 



Orbits large, deep, the upper margin entire and 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. 



Antennidarly fossae widely open to their respective orbits, small, and filled 

 entirely by the basal antennulary jouit, to the complete exclusion of the large 

 Jiagelhm : the interanteunulary septvmi, though very narrow, is complete. 



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

 stalk 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. 

 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 ischium, owing to the semilunar expan- 

 sion of the outer border of the merus : the palp, which is of good size, is jointed 

 to the antero-internal angle of the merus. 



