322 TAGE SKOGSBERU 



has six bristles; of these the one situated farthest back, which is very like and obviously corre- 

 sponds to the long distal (sensory?) bristle on the end joint of the endopodite in other forms, 

 is moderately long, being about as long as the total length of the three distal joints of the exopo- 

 dite; it is somewhat shorter than the nearest of the remaining bristles, which, like the others, 

 is of the ordinary type with short, fine hairs. These remaining five bristles decrease almost 

 imiformly in length the more anteriorly (and proximally) they are situated and correspond 

 presumablv to the five bristles on the first endopodite joint in closely related genera and 

 sub-genera. 



Mandible (fig. 8): — P r o t o p o d i t e: The endite on the coxale (fig. 9) has com- 

 paratively few spines, mostly relatively short; its two distal points are rathei considerably more 

 powerfully developed than the spines, and, unlike the latter, they are furnished with weak 

 secondary spines; between these two points there is a rather low point; cf. remark on p. 182 

 above. Basale: This has seven bristles ventrally: two a-bristles, one b-bristle, two c-bristles 

 and two d-bristles. Of these the two a-bristles, the b-bristle and one of the c-bristles are very 

 short, and also one of the d-bristles is rather short; the other c-bristle, on the other hand, is 

 rektively long, longer than the height of this joint; the longest d-bristle is not as long as the 

 posterior side of the second endopodite joint. Of the three dorsal bristles of this joint the prox- 

 imal one is fixed at rather a long distance in front of the middle of the joint and is about half 

 the length of the joint; of the two distal bristles one is about as long as the former bristle, the 

 other is somewhat longer; all three have short hairs. The exopodite is about as long as 

 or slightlv longer than the dorsal side of the first endopodite joint. Of its two bristles, both of 

 which have short hairs, one is somewhat shorter and the other somewhat longer than this branch. 

 Endopodite: The four ventral bristles of the first joint all have short hairs; the two longest 

 of them, which are somewhat different in length, are relatively short, considerably shorter than 

 the posterior side of the second endopodite joint. The second joint has comparatively few 

 bristles along the proximal half of the anterior side: seven more or less long bristles with short 

 hairs, — their relative lengths vary to some extent, — and four or five short cleaning bristles 

 with rather strong double pectination distally. On the posterior side, distally of the middle, 

 this joint has two short, bare or almost bare bristles, one situated somewhat distally of the other; 

 one specimen, cf. fig. 8, had only one of these bristles developed on the right mandible, Distally of 

 these bristles there are two more bristles, situated at the side of each other, generally rather consid- 

 erably shorter and weaker than the former ones; the medial one of these is somewhat, though 

 only slightly, longer and more powerful than the lateral one. Of the seven bristles on the end 

 joint (fig. 10) the two middle ones, the main claws, are about a third of the length of the second 

 endopodite joint. Of the two anterior ones the medial one is powerful, claw-shaped and rather 

 slightly shorter than the main claws; it is also distinguished by the fact that its anterior edge 

 has a sort of hyaline border or casing; the other of the anterior ones is weak and is only a little 

 more than half the length of the former one. Of the three posterior bristles one is about as long 

 as the main claws, but somewhat weaker, one is weak and about as long and as strong as the 

 shorter of the two anterior ones, the third is exceedingly short. All tlie bristles of the end joint, 

 except the anterior claw, have weak posterior secondary teeth. Pilosity: On the inside of the 



