'.U-2 rvci: sKocsiii'iRfi 



tli(> iniddlt' of tlu' juinl ami has slmil hairs; it is aliout as h)iit; as 1 he next In the (iiitci'iunsl 

 of the distal bristh's nii the third ciiditf. The liiistic dti the b()iindar\' Ixtwccii ihi- liasaic and 

 tho lirst i'i\do|)i>diii> joint is ratlior sliort, al)out as \ou^, as the proximal liiisth' (ni the ()utsi(h' 

 of thi' third eiulito. and has short hairs. Thr >■ x n p o d i t c is very small, almost verni<il'(irm, 

 and is disphu'i'd distally almost to the midtile of the Un\^ tirst (^iidopoditc joint. Of its three 

 bristles the two distal ones are subequal and about half tlu" length of the first endopodite joint; 

 the proximal one is only about a quarter of the length of i he distal ones. One of the distal ones is 

 sparsely furnished with long hairs, the other is bare; tlie short proximal one has short hairs. 

 K n d (1 p o d i t e: The tirst joint has mimerous transversal creases on its outside; one of these 

 creases, somewhat distally of the exopodite, seems to extend across the joint; it can, however-. 

 scarcely be considered as an indication of a further division of this joint. The 2)ostero-distal 

 part of this joint is not strongly chitinized nor developed as a cutting edge. Distally this joint 

 has (fig. 17) two bristles on the anterior edge (denoted by x in the figure), one rather long and 

 powerful, somewhat bent into the shajse of a claw distally and having there a thick cushion 

 of fine, soft hairs, the other considerably weaker and only about half the length of the former 

 one and furnished at the middle with a few long, stiff secondary bristles. On the posterior 

 edge there are three bristles distally (denoted by y in the figure). Two of tiiese are of about 

 the same length and strength as the longer of the two on the anterior edge and are very strongly 

 pectinated distally, the third is weak, bare and only a little more than half the length of the two 

 former ones. The end joint (fig. 17) has thirteen bristles: Four a-bristles, of which the next to 

 the posterior one is of about the same type and size as the two powerful posterior distal bristles 

 of the first endopodite joint, but with a still better developed pectination, the three others are 

 somewhat shorter, rather weak, and bare. There seems to be no doubt that the other nine 

 bristles on this joint are to be homologized with the groujjs of b-, c- and d-bristles on the end 

 joint of other forms of this sub-family which are described in this work; this homologization 

 is made very difficult, however, by the fact that the bristles are situated very close together 

 and are somewhat displaced. The attempt at homologization, the result of which is seen in 

 the accompanying figure 17, cannot be taken as quite certain, although there is a rather great 

 probability that it is correct. If this homologization is used, these bristles are developed as 

 follows: Three b-bristles, two of which are of the same type as the longest a-bristle, one almost 

 as long as this bristle, the other somewhat shorter; the remaining b-bristle is only about a third 

 or a half of the length of the shorter of the two former b-bristles, rather weak and weakly 

 pectinated. Three c-bristles, the two posterior of which are subequal and also of the same 

 type as the longest a-bristle, but not quite half the length of this bristle; the third, the anterior 

 one, is very short, almost reduced and only w^eakly pectinated. Three d-bristles, subequal and 

 of about the same type and length as the shorter of the two long b-bristles. Pilosity: The inside 

 of the first endite has some fine hairs, the outside of the third endite has very close, fine hairs. 

 The palp and the exopodite, on the other hand, are smooth. 



■ Fifth limb: — Protopodite: The first endite has eight powerful bristles 

 of moderate length. The proportion between these bristles is about what is showh in fig. 19 

 of C. (Vargida) norvegica, but bristles nos. 3 and 5, counting from the anterior side of the limb. 



I 



