942 CRUSTACEA. 



naked, setae hardly longer than breadth of joint ; inferior pair half 

 shorter than the superior, base longer than in superior, third and 

 fourth joints subequal, flagellum much shorter than base, hirsute. 

 The four hands subequal, quite small, subrectangular, apex trun- 

 cate, finger minute. Feet of third and fourth pairs with the first 

 joint quite broad j fifth, sixth, and seventh gradually increasing in 

 length. 

 Male. — Hand of second pair large, subovate, above arcuate, below 

 (palm) nearly straight, with a few setse, and near apex a minute 

 acute tooth, finger long. 



Plate 64, fig. 5 a, female, much enlarged ; b, c, side and front view 

 of head (showing a 1 , a 2 , antennae ; I. labrum ; rad, mandible ; m\ <m 2 , 

 first and second maxillae; m 3 , maxillipeds) ; d, posterior caudal stylet; 

 e, mandible ; /, maxilla of first pair ; g, ibid, of second pair ; 7i, max- 

 illipeds; i, hand of female of first or second pair; k, first pair of male; 

 I, second pair of male; m, leg of seventh pair; n P caudal stylet of first 

 or second pair. 



Near Hermite Island, Tierra del Fuego ; brought up with kelp, in 

 five fathoms water, by Lieutenant Case, January 27, 1839. 



Length, nine lines. In an upper view the front margin of the 

 head is straight, in a side view there is a slight prominence just 

 before the eye. The legs of the fifth pair have the tarsus inverted, 

 and the following tarsi point usually outward. The last abdo- 

 minal segment is short triangular and very obtuse. The posterior 

 stylets project a little beyond this segment; the other pairs reach 

 to the same distance backward. The flagellum of the inferior an- 

 tennae is tapering, and but little longer than fourth joint of base. 

 The claw in the four hands of females closes against the terminal 

 margin. In the male, the finger of the second pair shuts against the 

 inferior surface, reaching nearly to base of hand; but the hands of the 

 first pair are very nearly like those of the female. The carpus in the 

 male second pair is very short, transverse, with the lower side pro- 

 longed and narrow, but not appressed at all to base of hand. The 

 finger is much curved. 



A female carried a large number of young between her legs, which 



