128 



All four edges of the telson are very salient and are. serrulate at their 

 proximal end : the median carina of the abdomen is represented on the telson 

 at its extreme proximal end only. 



The free ends of the abdominal pleura, from the 2nd to the 5th, show as 

 a pair of strong sharp recurved spines, the anterior of which is the larger in the 

 case of the 2nd, 3rd and 4th pleura : the pleuron of the 6th somite ends in a 

 single recurved spine. 



Eyes large, globular, vastly wider than their stalks, of a brownish-purple 

 colour in spirit. 



The antennular peduncle projects a short way beyond the antennal scale : 

 the inner antennular flagellum, which is longer and slenderer than the outer, is 

 hardly longer than the peduncle : the outer flagellum in the male is much 

 thickened up to its filamentous tip, but is not foliaceous. 



The antennal scale is broadly oval, its breadth being more than three-fifths 

 its length : the antennal flagellum is as long as the distance between the tip of 

 the rostrum and the after edge of the 3rd abdominal tergum. 



The external maxillipeds reach the tip of the antennal scale and are little 

 less stout than the 1st pair of thoracic legs. 



The 1st pair of legs, with the dactylus extended, reach to the end of the 

 penultimate joint of the external maxillipeds. 



The 2nd pair of legs, which reach beyond the antennal scale by more than 

 a third of their carpus, are at least as long as any of the last 3 pairs. 



In the last two pairs of legs the propodite ends in a brush of seta?, and the 

 dactylus is vertically compressed, dorsally grooved, and lanceolate. 



The colours in life are variable. In the type they were recorded as " old 

 ivory white, with orange-white markings on tips of spines, etc. ; the eyes are 

 magenta." In the variety andamanensis the colours, according to my own 

 observation, were pink and the eggs pea-green. 



In a large female the carapace and rostrum are 51 millim. long and the 

 abdomen is 66 millim., measured in the middle line. 



A very common species: found in the Bay of Bengal at 145-250, 193, 272, 

 281-258, 410, and 594-225 fathoms; in the Arabian Sea at 142-400, 360, 480, 

 295-360, and 595-556 fathoms; and in the Andaman Sea at 188-220 and 405 

 fathoms. 



-r, t -» T 6231 /rn c ,, N 4233-4241 6232-6233 6732-6733 8831-8854 



Kegd. JNos. — (lype of the species) : = : - : — ^ : : 



1396-1398 _ 1943-1944 _ 3411-3412 

 10 * 10 ' 10 



