| CRUSTACEA OF THE MERGUI ARCHIPELAGO. 241 
Clibanarius unfraspinatus has hitherto been recorded from 
Singapore, and appears to be common in the Bay of Bengal and 
in the neighbouring seas. 
136. Crrpananivs, sp. 
The collection contains three small specimens of a Clibanarius, 
collected at Elphinstone Island, and inhabiting shells of Buc- 
cinum and Natica. They are closely allied to C. infraspinatus, 
having the dactylopodites longer than the propodites, but they 
are readily distinguished by their coloration and by some other 
characters. They are closely allied to or perhaps even identical 
with C. striolatus, Dana, a species which was recorded by Heller 
from the neighbouring Nicobar Islands. In C. striolatus the left 
chelipede is a little larger than the right, whereas in these speci- 
mens the right is the larger one. The cephalothorax of the 
largest specimen is scarcely 11 millim. long. The gastric region 
is 5 millim. long and 4% millim. broad. The median frontal tooth 
is acute, triangular, and projects scarcely more forwards than 
the lateral frontal teeth. The eye-peduncles (5 millim. long) are 
a little longer than the breadth of the anterior margin of the 
cephalothorax ; they are somewhat longer than the peduncles of 
the external antenne, and also slightly surpass the peduncles 
of the internal antenne. The right chelipede is a little larger 
than the left. The under surfaces of the arms present no trace of 
the spiniform tubercles characteristic of C. infraspinatus. Hach 
arm is provided with the ordinary small spine at the distal end 
of the under margin of the outer surface; the wrist is armed 
with two or three acute spines along the inner margin of the 
upper surface, the distal spine of which is the largest. The upper 
surface of the wrist is somewhat uneven or tubercular. The 
upper surfaces of the hands are scarcely twice as long as broad ; 
four or five acute teeth are found along the inner margin of the 
upper surface of the palm. The hands and the fingers are some- 
what tubercular above. The carpopodites of the second and 
third pairs of legs are armed as usual with a spinule at the distal 
ends of their upper margins. The dactylopodites are distinctly 
longer than the propodites, the propodite of the right leg of the 
third pair being only 6 millim. long, whereas the dactylopedite 
is nearly 9 millim., ¢.¢. almost once and a half as long as the 
propodite. : 
The gastric region and the legs are of a light rose-colour, and 
LINN. JOURN.—ZOOLOGY, VOL. XXII. 16 
