272 TAGE SKOGSBERG 



about the same length as the longest j^iroximal one; this bristle was, however, quite lacking in 

 the specimen investigated; its probable existence is indicated partly by the presence of a similar 

 bristle in the male of this species as well as in closely related forms, and also by the fact that 

 on the endopodite on both sides of the female investigated there was, at the place where this 

 bristle should have been situated, a circular opening in the chitin, such as arises when a bristle 

 has been torn off. 



Mandible: — Pro to pod it e: The endite cm the coxale is of about the same type as 

 that of C. (V.) norvegica. Basale: This has nine bristles ventrally: three a-bristles, one b-bristles, 

 two c-bristles and two d-bristles; between the two latter groups there is an additional bristle. 

 Of these the a-bristles, the b-bristle, the shorter of the c- and d-bristles and the bristle between 

 the last two groups are very short, the longer c-bristle is about as long as the height of the joint, 

 the longest d-bristle is about as long as the second endoj^odite joint. Of the three dorsal bristles 

 on this joint the proximal one is fixed at about the middle of the joint and is half as long as the 

 joint, the two distal bristles, which are somewhat different from each other in length, are a little 

 longer; all these three bristles have short, fine hairs. E x o p o d i t e: This is about as long 

 as the dorsal side of the first endopodite joint or a little longer. Of its two bristles, both of which 

 have short hairs, the distal one is abovit as long as the exopodite, the other one being about 

 twice this length. Endopodite: Of the four ventral bristles on the first joint the longest 

 one has a rather large number of long secondary bristles and has short hairs distally, the other 

 three bristles have short hairs. Second joint: On the anterior side this has eight or nine more 

 or less long bristles, with short hairs, the longest of these extending with their points a little 

 beyond the end joint, and ten or eleven cleaning bristles, all with rather fine double pectination. 

 The arrangement of the latter bristles varies: sometimes they are clearly arranged in two rows 

 running obliquely upwards and forwards, sometimes they are situated almost quite irregularly. 

 On the posterior side this joint has four bristles, bare or almost so, situated in the same way 

 as in tjie preceding species of this sub-genus. The two distal ones, which are situated close 

 to each other, are somewhat shorter and weaker than the two others and of about equal strength ; 

 the medial one of them is only slightly longer than the lateral one. The bristles of the end joint 

 are practically of quite the same type as that described and reproduced for C. (V.) norvegica 

 except that the anterior and the posterior bristles are relatively somewhat, though only slightly, 

 longer; all the bristles of this joint are smooth. Pilosity: The first endopodite joint has short 

 hails (lorso-distally, the second endopodite joint has groups of short hairs situated transversely 

 proximally on the anterior side and on the posterior side. 



Maxilla: — Protopodite: The first endite has twelve powerful bristles, sub- 

 equal and of moderate length, of the same types as the corresponding bristles in C. (V.) norvegica. 

 On the three inner ones the secondary bristles continue right to the point of the bristle, on the 

 others they stop a short distance from it; of the latter bristles five have a simple coarse point 

 and lour arc tri-furcated distally. The second endite (fig. 6) has seven rather strong and mode- 

 rately long bristles, all almost subequal except the inner one, which is only half the length of 

 the others. Sometimes they are all furnished with a moderate number of long, stiff secondary 

 bristles at the middle, sometimes there are iir) siens of anv such secondarv bristles on the third 



