842 CRUSTACEA. 



tatd et partim hirsutd, dentibus duobus prope basin uno prope 

 apicem. 



Male : — Head as long as next two segments together, a little salient 

 before the eye. Antennae long ciliate below ; superior pair much 

 more slender, sparingly shorter than inferior pair, third joint 

 shorter than second, flagellum five-jointed, first joint oblong; infe- 

 rior pair very stout, fourth joint much longer than third, fifth 

 as long as third, sixth and seventh (last) minute. Anterior feet 

 with a small subovate hand; second pair very stout, the hand 

 oblong and thick, nude, having a long, stout, immoveable finger 

 below near base, moveable finger longer than the other, scarcely 

 curved. Posterior caudal stylets reaching back hardly beyond the 

 first. Six posterior legs with few short setae. 



Female : — Body stouter. Hand of second pair stout, oblong, but little 

 smaller than in males, arcuate above, somewhat excavate and hir- 

 sute below and three- toothed, two of the teeth near base, and one 

 near apex. 



Rio Janeiro, Brazil ; dredged in the harbour. 



Plate 56, fig. 2 a, male, much enlarged ; b, part of superior an- 

 tennae ; c, part of leg of first pair ; d, leg of fifth pair ; e, extremity of 

 abdomen, upper view ; /, upper view of last pair of stylets ; g, same, 

 side view. — h, female, much enlarged ; i, mandibular palpus ; k, max- 

 illipeds ; I, part of leg of first pair; m, ibid, of second pair ; n, ibid, of 

 third or fourth pair ; o, ibid, of sixth or seventh pairs. 



Length, five lines. The males are much more slender than the 

 females. The large hand is as long as three of the thoracic segments, 

 or even longer. The eye-margin of the head is somewhat salient 

 between the bases of the inferior and superior antennae. The hand of 

 the first pair in males has a few hairs below ; the carpus is but little 

 shorter than the preceding joint, is protuberant a little below, and 

 bears a tuft of rather long hairs. The same hand in the female i* 

 more hairy below, and the third joint of the leg is narrower, and not 

 longer than the carpus. 



The mandibular palpus, as observed in the female, is three-jointed ; 

 the second joint longer than the third, and furnished with many setae 



