CRtrSTACEA OF THE MERGUI ARCHIPELAGO. 241 



Glibanarius infraspinatus has hitherto been recorded from 

 Singapore, and appears to be common in the Bay of Bengal and 

 in the neigbbouring seas. 



136. Clibanariiis, sp. 



The collection contains three small specimens of a Glibanarius, 

 collected at Elphinstone Island, and inhabiting shells of Buc- 

 cinum and Natica. They are closely allied to O. infraspinatus, 

 having the dactylopodites longer tban tbe propodites, but tbey 

 are readily distinguished by tbeir coloration and by some otber 

 characters. They are closely allied to or perhaps even identical 

 with G. striolatus, Dana, a species which was recorded by Heller 

 from the neighbouring Nicobar Islands. In G. striolatus the left 

 chelipede is a little larger than the right, whereas in these speci- 

 mens the right is tbe 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, triangulai', and projects scarcely more forwards tban 

 the lateral frontal teeth. The eye-peduncles (5 millim. long) are 

 a little longer' than the breadth of the a.nterior margin of tbe 

 cepbalotborax ; they are somewbat longer than the peduncles of 

 the external antennae, and also slightly surpass tbe peduncles 

 of tbe internal antennse. The rigbt chelipede is a little larger 

 than the left. The under surfaces of the arms present no trace of 

 the spiniform tubercles characteristic of G. infraspinatus. Each 

 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- 

 wbat 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 dactylopodite 

 is nearly 9 millim., i. e. almost once and a half as long as the 

 propodite. 



The gastric region and the legs are of a light rose-colour, and 



LINN. JO¥EN. — ZOOLOGY, VOL. XXII. 16 



