312 



Memoirs of the Indian Museum. 



[Vol. V, 



is also a smoothly rounded ridge on either side of the median carina, running paral- 

 lel with it and commencing near the upper part of the orbital margin. In the male 

 these ridges are non-existent. The carapace is strongly compressed and, as in other 

 species of the genus, the posterior margin is deeply excavate mid-dorsally. The 

 orbital and anterolateral angles are bluntly rounded. 



The eyes are short and globular, the breadth of the cornea being much greater 

 than that of the stalk. The antennular peduncle (text-fig. 34a) reaches a little be- 

 yond the middle of the antennal scale. In lateral view the basal process is lanceolate 

 in shape ; its margins bear long setae and the apex reaches to the distal end of the 

 segment to which it is attached. The third segment is longer than the second. The 

 two antennular rami are stouter in the male than in the female. The outer ramus is 



a,. 



Fig. 34. — Leplochela aculeocaudata, Paulson. 



a. Antennule of female. 



b. Antennal scale. 



c. Mandible. 



d. First maxilla. 



e. Second maxilla. 

 /. First maxillipede. 



the longer; when flexed backwards it reaches to the end of the carapace in the 

 female and about to the middle of the third abdominal somite in the male. 



The antennal scale (text-fig. 34Ô) is narrowly triangular, about four times as 

 long as broad, the lamella at the distal end sloping rapidly away from the base of 

 the terminal spine. The outer margin is sinuous in both sexes, concave behind the 

 middle point and slightly convex onwards to the apex. 



The cutting edge of the mandible (text-fig. 34c) in its outline resembles Paulson's 

 figure, but bears from 12 to 15 teeth. It is not cleft in the middle as, according to 

 Stimpson's account, it is in P. gracilis. The palp is composed of a single segment, 

 somewhat expanded laterally and furnished with setae on its margins. Three lacin- 

 iae are well developed on the inner edge of the second maxilla (text-fig. 340). 



The first maxillipede (text-fig. 34/) bears a large bilobed epipod (not shown in 



