from the South Polar Regions. 4G1 



tliey also appear to be liable to injury and may be much 

 broken. 



The ovigerous legs, which are present in both sexes, arise 

 on very short processes from the lower side of the cephalic 

 segment immediately in front of the first pair of lateral 

 processes. They are 10-jointed and armed with a dentate 

 claw. The first joint is quite small and about three times 

 the length on one side that it is on the other. The two 

 following joints are subequal in size and devoid of sette; the 

 proximal one is stout, the distal one more slender, somewhat 

 curved, and its distal termination very oblique. The fourth 

 joint is nearly four times as long as the preceding one, 

 slightly curved and stouter at its distal end, which bears a 

 few setse; two or three more are to be found on the outer 

 margin of the joint, while on the inner margin a small 

 protuberance occurs at about a quarter of its length. The 

 fifth joint is conspicuously the longest and its diameter 

 increases towards the distal extremity ; it is sparsely setose 

 along the greater part of its length. The sixth joint is 

 rather more than half the length of its predecessor, setose 

 along the inner margin, and with somewhat stouter setfe 

 distally. Of the four terminal joints the proximal is the 

 longest and the remainder are subequal in length, but 

 progressively more slender. They only bear an occasional 

 seta and a single series of denticulate spines. The last thi'ee 

 joints bear a pair of long setse at the distal extremity, and the 

 spines consist of a slender shaft witli a swollen base. Near 

 the base is a pair of small teeth, then follow two pairs of 

 comparatively long slender ones ; the remaining four pairs 

 are more delicate and blade-like. The terminal claw is 



Claw and denticulate spines of ovigerous leg, X 130. 



provided with about nine slender teeth (see figure). These 

 teeth as well as the denticulate spines seem to be particu- 

 larly liable to injury, as they are more or less broken in many 

 specimens. 



