706 ME,, w. T. CALiiAX OS iiACKCTiious [May 16, 



far as the end of the first joint of the peduncle of the antenmiles. 

 There is on the outer surface of the coxal joint a conical curved 

 papilla similar to, but smaller than, the papilla to which the epipod 

 of this appendage, here absent, is attached in C. wycJcii. The exo- 

 pod exceeds in length the joint from which it springs. The terminal 

 joint is shorter than the penultimate joint, and presents a 

 remarkable structure (fig. 9rt). About the middle of its length 

 there is a deep excavation of the inner side, a little beyond which 

 distallv stands a stout curved spine ; a double row of strong toothed 

 spines smaller thnn the preceding and gradually diminishing in 

 size, fringe the distal margin of the notch ; the oblique posterior 

 or proximal margin is fringed with feathered or pectinate setae. 

 Beyond the notch, the inner margin of the joint bears a series of 

 6-7 short spines leading up to the pointed apex of the limb. I am 

 not aware that an arrangement similar to this is found in other 

 Ati/idce. In C. tuijckii there is only a very slight concavity of the 

 inner margin of the joint, clothed with numerous spines and 

 setae. 



The first pair of peraeopods (PI. XL. figs. 10, 10a) do not reach to 

 the terminal joint of the third maxillipeds. The ischium and merus 

 are short aud subequal. The carpus is conical in shape, rather 

 more than one-half as broad as long, about equal in length to the 

 merus, and slightly longer than the palmar portion of the hand ; it 

 is slightly excavated distally on the inner side (fig. 10 a). The 

 hand is long and narrow, the breadth being about one-third of the 

 length. The fingers are slender, longer than the palm, spoon- 

 shaped, but acutely pointed as seen from the side, instead of trun- 

 cate as in G. wychii. The opposed margins bear series of small 

 stout spinules increasing in size towards the tip, but there is no 

 strong terminal hook as in G. luyckii. The brushes of setae borne 

 by the fingers are very scanty compared with those of G. ivyckii. 



The second peraeopods (PI. XL. fig. 11) reach forward as far as 

 the tip of the third maxillipeds. The ischium is a little longer 

 than the merus and about equal to the carpus. The latter is 

 cylindrical and only slightly wider distally. The hand is longer 

 than the cai-pus by one-third the length of the latter, and its breadth 

 is less than one-quarter of its length. The fingers are very long 

 and slender, about twice as long as the palm, sharply pointed, and 

 with scanty terminal brushes. 



The third pair of peraeopods extend beyond the third maxillipeds 

 when turned forward, and the last pair fall short of them. The 

 dactylus is one-third to two-fifths the length of the propodus. 

 The dactylus of the last pair (PI. XL. fig. 13a) is similar to the 

 preceding two pairs, having only a slightly larger number of spines 

 on its inner margin, the numbers being from 11 to 15 in the case 

 of the third and fourth peraeopods, and from 16 to 19 in the last 

 pair. In Oarklina the dactylus of the last peraeopods is longer and 

 bears a much more numerous series of spines than do those of the 

 preceding two pairs. In a specimen of G. wycJcii, for example, 

 the dactyli of the third and fourth pairs bore 7 and 8 spines 



