40 EEV. T. E. E. STEBBING AND MK. D. EOBEETSON ON 



having near the base a projecting tooth, which attains to a length equalling the breadth 

 of the hand, near to the distal extremity of AA'hich this margin forms a much smaller 

 tooth ; the varied relations of size between these two teeth are illustrated in the figures 

 gn. 2, gn. 2 a, and gn. 2 b ; a very long, much curved finger arches over the small cavity 

 formed between the hinge and the distal tooth and the large cavity between the two 

 teeth ; in some cases the inner margin of the finger has a small prominence approaching 

 the distal tooth of the hand ; there are several slender setge about the hinder margin 

 and teeth of the hand, and setules along the inner edge of the finger. In the female 

 the marsupial plates are longer and broader than the first joint and are fringed with 

 setse. The first joint of the limb is longer than the hand, which is here distinct from 

 the wrist, the whole limb being very similar to that of the first pair, but a little 

 larger. 



First perceopods. The side-plates m\ich broader than the preceding pair, with the 

 front margin convex, the lower and the hind margin straight. The branchial vesicles 

 very small. The first joint with convex front and hind margins, the latter having three 

 setae planted near the middle; the third joint armed at two points on each margin, 

 much widened distally; the fourth joint only a little longer than the second, armed at 

 two or three points of the hind margin and at the apex of the convex front ; the fifth 

 joint as long as the third, armed at three points of each margin; the finger curved, 

 rather stout, more than half the length of the fifth joint. 



Second perceopods. The side-plates large, almost square, with convex front margin, 

 and the hinder a little excavated. The limb as in the preceding pair. 



Third percBopods. The side-plates small. The first joint pear-shaped, the convex 

 hind margin very slightly indented, the remainder of the limb nearly as in the two 

 preceding pairs, but rather more slightly constructed. 



Fourth perceopods resembling the third, but with the hind margin of the first joint 

 more strongly indented, and all the joints more elongate. 



Fifth jJero'opods. The first joint broadest at the centre, the hind margin very convex, 

 the front only slightly ; the limb in general resembling that of the preceding pair, but 

 with the joints more elongate. 



Pleopods. 'l"he two coupling-spines very short, with two or three teeth ; the peduncles 

 have also here and there a plumose seta; the cleft spines are two or three in number, 

 where there are three the third being much longer than the first ; the joints of the inner 

 ramus from five to seven, of the outer from six to eight. 



Uropods. Peduncles of the first pair longer than the rami, of which the inner has 

 small spines at four points, the outer at three, the outer being rather the shorter ; in 

 the second pair the peduncle is longer than the outer, but rather shorter than the 

 inner ramus ; the peduncles of the third pair are stout, longer than those of the second 

 pair, with a spine at two points of the upper margin ; the shorter outer ramus is fringed 

 9,bove on the distal half with a graduated series of about nine minute denticles, the 



