1916. | S. Kemp : Notes on Crustacea Decapoda. 369 
The outer maxillipedes are clothed with long setae and reach 
beyond the end of the antennal scale by almost the entire length 
of the ultimate segment. 
The first peraeopods (text-fig. 4c) are a little shorter than the 
outer maxillipedes and are not provided with exopods. The spine 
on the outer margin of the merus is terminal and on the anterior 
margin between it and the articulation of the carpus there is another 
smaller spine. The carpus is short; the inner margin is lobed and 
bears coarse setae, while on the outer margin are twospines. The 
breadth of the hand, measured near its base, is about one third its 
entire length. 
The second peraeopods (text-fig. 4d) reach to the carpus of the 
first pair. The carpus is two thirds the length of the merus and is 
as long as the palm and half the length of the fingers. In the chela, 
which as in the preceding species is weakly constructed and with- 
out cutting margins or terminal claws, the palm is about one 
seventh longer than the dactylus. The fixed finger is noticeably 
shorter than the dactylus and both fingers bear long setae. 
The slender third peraeopods reach beyond the antennal scale 
by about the length of the two ultimate segments. The merus is 
a little shorter than the ischium and a little longer than the pro- 
podus. The carpus is one and two thirds the length of the merus 
and is one fifth longer than the propodus and dactylus combined. 
The fourth and fifth legs are rather densely clothed with hairs. 
The merus, carpus and propodus are subequal and the dactylus is 
a little more than half their length. 
The abdominal somites are quite smooth and are covered with 
a fine pubescence similar to that on the carapace; the margins of 
the pleura are rounded. The inner ramus of the last four pairs of 
pleopods is comparatively well developed in the male and carries 
an appendix interna; in the female it is reduced and no trace of 
this appendage is to be found. ‘The outer uropod is shorter than 
the inner and is nearly three times as long as broad. ‘The telson 
is one and a half times the length of the last abdominal somite; it 
is provided with two pairs of dorso lateral spinules and its lower 
margins are ciliated. The apex is similar to that of P. parvirostris, 
Pontophilus pilosus is sometimes conspicuously banded in life 
with dark brown. In examples from very shallow water there is a 
natrow transverse band at the posterior end of the carapace and 
others, rather broader, on the second and fourth abdominal somites 
and across the middle of the telson and uropods. Individuals 
obtained at a depth of two fathoms were marbled with brown pig- 
ment mixed with a certain amount of pure white, the carapace 
being sometimes of a duil reddish-brown. In all the specimens 
there was a dark spot at the distal end of the subchela. 
The specimens were obtained at the northern end of the Gulf 
of Mannar.— : 
Bo79 Kilakarai, Ramnad S. Kemp. uv, 36.4 2 
dist., S. India. 5'5-13 mm. TyYPEs. 
