370 Records of the Indian Museum. [VoL thn, 
Pontophilus plebs, sp. nov. 
(Plate wilig me: 5.) 
The rostrum is longitudinally channelled; its lateral margins 
are convergent and meet in a narrowly rounded apex. ‘The cara- 
pace is devoid of pubescence and is not carinated. It bears seven 
teeth, one situated mid-dorsally, close behind the rostrum and 
separated from it by a shallow transverse groove, and three pairs 
on either side. The latter comprise a stout hepatic tooth, ona 
level with that in the middle line, and two small teeth, both in 
advance of the hepatic, placed close together behind the sharp 
spinous branchiostegal angle. In the anterior half of the carapace 
there are obscure longitudinal furrows above and below the hepa- 
tic tooth. 
The basal segment of the antennular peduncle (text-fig 5a) is 
longer than the two following combined, externally the distal 

Fic. 5.—Pontophilus plebs, sp. nov. 
a. Antennule. c. First peraeopod. 
b. Antennal scale. d. Second peraeopod. 
margin is produced to an acute tooth. The lateral process is more 
or less oval in shape, longer than broad, and is anteriorly pointed. 
The second and third segments are broader than long. The an- 
tennal scale (text-fig. 5b) is onlv twice as long as broad; the outer 
margin is straight and terminates in a tooth which is far exceeded 
by the distal end of the lamella. 
The third mexillipedes reach beyond the scale by about half 
the length of the ultimate segment. The first peraeopods (text- 
fig. 5c) are scarcely shorter. The outer edge of the merus termin- 
ates in a large tooth and the margin between this tooth and the 
articulation of the carpus is unarmed. ‘The carpus bears a stout 
external tooth. The hand is about two and a half times as long 
as wide and the single tooth which forms the ‘ thumb’ of the sub- 
