362 Records of the Indian Museum, [VoL. XH, 
pace terminating just above the sharp branchiostegal spine. This 
spine reaches to the level of the rostral apex and extends far in 
advance of that which defines the outer orbital angle. Except for 
those on its frontal margin the carapace is entirely devoid of 
spines and, except for that in the mid-dorsal line, it is without 
carinae. ‘The carapace does not appear to be pubescent. 
The basal segment of the antennular peduncle is about one 
and a half times the length of the second and third combined; its 
lateral process is oval (text-fig. 2a). 
The antennal scale differs notably in the two sexes. In the 
female (text-fig. 2b’) it is scarcely more than twice as long as broad 

a. 
Fic. 2.—Pontophilus lowist, sp. nov. 
a. Antennule. b’, Antennal scale of female. 
5b. Antennal scale of male. c. First peraeopod. 
d. Second peraeopod. 
and the lamella, though narrowed, is of considerable breadth at 
its distal end. In the male (text-fig. 2b), it is almost three times 
as long as broad and the lamella slopes sharply away from the 
base of the distal tooth. The outer margin in both sexes bears 
numerous spines, in this respect differing from all known species 
of the genus. Inthe female the margin is straight or very slightly 
concave and bears some 12 or 13 spines which increase in size from 
behind forwards. In the male the margin is strongly sinuous, 
convex in the middle and concave towards the distal end. It 
bears from 9 to II spines, similar to those of the female, but they 
are restricted to the basal convex portion of the margin and do 
not extend on to the concave part nearer the apex. 
