250 Mr. E. I. Pocock on 



Tail slender. Inferior surface of the three proximal seg- 

 ments smooth, with conspicuous keels ; inferior surface of the 

 fourth segment furnished behind with a few small denticles, 

 smooth in front ; inferior keels and posterior inferior margin 

 of the iifth strongly denticulated, the posterior inferior margin 

 bearing six larger denticles, two upon each lateral angle and 

 two in the middle line. The inferior-lateral intercarinal 

 spaces with a few small denticles. The superior and supero- 

 lateral keels denticulate, the distal more strongly so than the 

 proximal. The upper surface of the segments depressed in 

 the middle line and smooth ; in the fifth segment the den- 

 ticles of the superior keels spread to a slight extent upon the 

 upper surface of the segment and considerably upon the 

 superior lateral intercarinal space. Vesicle remarkably large, 

 wider than any of the caudal segments, smooth above and at 

 the sides, granular beneath ; aculeus equal to about half the 

 length of the vesicle, with its distal half bent almost at right 

 angles to its proximal half. 



Chela. — Superior surface of humerus furnished with more 

 or fewer larger and smaller tubercles, which, on the proximal 

 portion of the segment, blend with those of the anterior 

 surface ; distal portion of anterior surface smooth, proximal 

 portion furnished with an oblique row of tubercles ; inferior 

 surface proxiraally tubercular, distally smooth ; posterior 

 surface smooth but for the presence of a single series of 

 setiferous punctures. Superior surface of brachiura furnished 

 with two uneven setiferous keels ; anterior surface finely 

 granular, bearing below proximally a few tubercles, and 

 separated from the inferior surface by a row of tubercles ; 

 inferior surface flat, smooth, bearing behind three irregular 

 series of setiferous pores. Hand much resembling in shape 

 that of Sc. Rmseli, but less convex above ; its upper surface 

 covered with many close-set rounded tubercles, which, espe- 

 cially near the posterior surface, show a tendency to fuse 

 together and to constitute ridges ; inferior surface of the hand 

 sparsely tubercular distally, and bearing two distinct rows of 

 tubercles in its proximal half. The segments of the palp and 

 of the legs bear longish hairs ; anterior surface of the femora 

 of the second, third, and fourth pairs of legs slightly granular. 

 Pectines absent. 



Colour blackish or piceous above, paler beneath ; legs 

 testaceous. 



Measurements in millimetres. 



Tail nearly four times as long as cephalothorax. 



Cephalothorax about equal in leug^th to the first two caudal segments. 



