84 



groove very distinct : the other markings of the carapace are as in the preceding 

 species except that the post-orbital crest is more oblique. 



The 4th, 5th, and 6th abdominal terga are carinated, each carina ending in 

 a spine : the carina of the 4th tergum is not complete anteriorly : 6th abdominal 

 somite much more than half as long again as the 5th. Telson hardly two-thirds 

 the length of the endopodite of the caudal swimmeret, armed on each side with 

 4 spinules. 



Eyes black, wider than their stalk, tubercle of the stalk not very prominent. 

 The outer antennular flagellum of the male is nearly as long as the first joint of 

 the peduncle, but in the female is much shorter, the inner flagellum is about as 

 long as the whole body. Antennal scale very large. 



The external maxillipeds in both sexes are a good deal shorter than the 

 first pair of legs. In the male alone they are more massive than any of the 

 legs, the carpus is broadened, the propodite is thickened, and the dactylus, which 

 has a spathulate tip, is twisted and curved like a sickle, with the concavity 

 outwards. 



The first 3 pairs of legs are, as in the preceding species, remarkable for 

 the broad compressed meri (especially those of the 3rd pair) and the very long 

 slender fingers. The slender 5th pair of legs reach beyond the antennal scale 

 by their dactylus and half their propodite. 



The exopodites of the first pair of abdominal appendages are about as long 

 as the first four abdominal terga. 



The " thelycum " is a narrow, acutely-triangular, hairy plate situated between 

 the 4th pair of legs : in the male there is an elliptical tubercle in the same 

 situation. 



The " andricum " consists of a pair of loosely-interlocking, subtriangular 

 plates the thickened outer edge of which is free distally. 



Colour in life, crimson. 



In a large female the carapace and rostrum are 95 millirn. long, and the 

 abdomen is 92 millim. long measured in the mid-dorsal line. The male is a good 

 deal smaller. 



Arabian Sea. in the neighbourhood of the Laccadives and Malabar coast, 

 360, 406, 430, 480, 531, 595-556, 636, 767-950 fathoms. Gulf of Manar 597 

 fathoms. Bay of Bengal, 281, 475, 594-225 fathoms. Andaman Sea 405 and 

 606 fathoms. 



Regd. Nos. (Types of the species): 3 -^: 9 -^ 7 



1418-1419, 195G-1959 2121 t 2613. 3405. 3843-3846. 3864 

 10 10 10 ' 1(1 ' 10 ' ' 10 ' 10 ' 



