12 



The swollen terminal joint of the eyestalk is rather longer than the slender 

 ■basal joint : eyes of good size, well pigmented, hemispherical, retractile into a 

 very decided hollow in the front wall of the hepatic region. 



The 2nd joint of the antenna-peduncle is not produced or acute at the 

 antero-extemal angle ; the antennary flagellum is much longer than the carapace. 



Chelipeds (in the adult female and young male) short, just reaching beyond 

 the end of the carpus of the first pair of legs : the arm is slenderer than the 

 corresponding joint of the first three pair of legs : the fingers are longer than 

 the hands : none of the joints are spinate. 



The second and third legs, which are longer than the first by their dactylus, 

 and longer than the fourth by their merus and dactylus, are 3 times the length 

 of the carapace. In the first three pair of legs the anterior border of the 

 meropodite is armed with large spines, but the other joints are unarmed : the 

 dactylus is slender, curved, and of great length, being hardly shorter than the 

 preceding joint. 



In the subcheliform, dorsal, fourth pair the anterior border of the merus 

 ends in a spine and the posterior border of the merus is spiny throughout, the 

 propus is much dilated and toothed at its basal angle posteriorly, so as to be 

 Z-shaped and has one or two spines on the undilated portion of its posterior 

 border, and the dactylus is short and is toothed along the posterior border. 



The abdomen of the male consists of seven segments. 



The carapace of an adult female is 45 milhm. long and 43'5 millim. broad. 



The colours in life vary from red to bluish-pink. 



In the Indian Museum are a large female and three young females from off 

 the Andamans, 480-500 fms., 498 fms. and 561 fms. ; a young male a large 

 adult female and four young females from off the Travancore coast, 406 and 

 430 fms. ; a large female with eggs from off the Laccadives, 360 fms. ; and a 

 young female from off Colombo, 597 fms. 



Hypsopheys, Wood-Mason. 



Carapace deep, longer than broad, quadrilateral or ovate-oblong, with deep 

 vertical parallel sides, the gastric region well delimited and occupying its ante- 

 rior half, the linea anomurica dorsal, distinct or indistinct. 



Front narrow, forming a simple or bifid rostrum which has a spine on 

 either side of its base. 



The orbits do not afford any concealment to the eyes, but form, on either 

 side of the rostrum, a broad concave facet sharply marked off from the rest 

 of the carapace by a ridge that arches round dorsally from the rostrum to the 

 antennal spine : at the upper and inner angle of this facet is a well defined 



