276 TAGE SKOGSBERO 



these bristles is pluinous. Exopu elite: First joint: The endite has six or seven distal 

 bristles and a rather long medial bristle, of the same types as the corresponding bristles of the 

 preceding endite. Second joint: This has a rather large number (20—21) of rather long bristles 

 of somewhat different lengths, all situated near the ventral edge. There is no pronounced gap 

 between the posterior and the other bristles. Of these bristles the two or three posterior ones 

 have long, soft hairs right to the point. A number of the rest have long hairs at the middle 

 and short ones distally; the long hairs are soft on the posterior ones of these bristles 

 and somewhat stiffer on the anterior ones and not clearly arranged in wreaths. Some bristles 

 have only quite short hairs. Pilosity: On the inside of this limb there are short, fine hairs 

 situated rather close together; along the ventral margin of the second exopodite joint there 

 is laterall)'' a series of short and rather stiff hairs. 



Seventh limb (fig. 1.3) : — This is relatively short, not attaining half the length 

 of the shell (in the two specimens that were investigated, a male and a female, this limb 

 was about 1,2 mm. long). Cleaning bristles : DistaUy, situated very close together, there are six 

 or seven ventral and six dorsal bristles; of these — both in the case of the ventral as well as the 

 dorsal ones — the one situated most distally is rather short, the next distal one is, on the 

 other hand, relatively long; beginning from the latter these bristles decrease fairly uniformly 

 in length the more proximally they are situated; one or two may, however, be exceptions to 

 this rule; the proximal ones are rather short. Proximally of these bristles there are seven or 

 eight ventral bristles and ten or eleven dorsal ones scattered irregularly, subequal, of moderate 

 length, their lengths varying somewhat, however. The cleaning bristles are furnished with from 

 one to seven bells cut off transversally distally; the tongue of the distal bell is cut off obliquely 

 (of about the same type as in figs. 27 and 28 of C. ( Macroci/pridina) castanea); proximally of 

 the bells the cleaning bristles are smooth. The end comb consists of from seven to nine long, 

 distally rounded, distal teeth, subequal or decreasing somewhat in length the more proximally 

 they are situated, and on each side of these there are four or five somewhat shorter proximal 

 teeth. The cavity dorsally of the end comb is comparatively shallow; its dorsal wall has a low 

 verruciform process; apart from this it is bare. This cavity has a special adductor (cf. the 

 diagnosis of the sub-genus). 



F u r c a (fig. 16): — This has eleven claws, aU well defined fi'om the lamella; beginning 

 from claw no. 2, which is somewhat longer than claw no. 1, they decrease fairly uniformly in 

 length the more proximally they are situated. Proximally of the claws the furca is smooth. 



Upper lip: — AU three glandular fields are moderately large; the unpaired dorsal 

 one is somewhat larger than the two paired ventral ones. Some of the mouths of the glands 

 in the former are directed obliquely forward, the others downward; the latter are situated in 

 about the same plane as the mouths of the glands on the two paired, ventral glandular fields. 

 (The upper lip shows a very great resemblance to that of Cypridina dorsoserrata, as this is 

 illustrated in pi. IV, fig. 3, G. W. MOller, 1908; it differs from this especially in having the 

 three glandular fields separated from each otluu- by deep grooves, as is shown in the diagnosis 

 of the sub-genus.) The protuberance dorsally of tlie upj)er lij) is rather high, with a simple point 

 and somewhat rounded. 



