238 TAOE SKOOSBERO 



joint, yet not (|uitf so long as the longest of these four bristles. The e x o ]) o d ite agrees 

 very nearly with that of the preceding species. It differs from this i)rincipally in the following 

 respects: The bristle of the second joint is furnished with rather .strong ventral secondary spines, 

 somewhat fewer in number than in the preceding sjiecies (from about ten to fifteen). The basal 

 spines on the tliinl to the ninth joints are comparatively ratlier stronger, they attain about the 

 same development as in C.(Vargula) norvegica. The short, dorsal one of the four bristles on the 

 end joint has rather numerous long natatory hairs. The e ii d o ]) o d i t e has quite the same 

 type as in the preceding species. On one specimen I found tlie abnormal type that is reproduced 

 in the adjoining figure 2 developed on the antenna of one side; that of the other side was 

 perfectly normal. 



Mandible: — Protopodite: Tlie cndite of the coxalc is furnished with a 

 moderate or sometimes rather large number of spines; its two distal points are rather consider- 

 ably stronger than the other spines, and are, unlike the latter, furnished witli a few secondary 

 spiiies; between these two points there is a low verruciform process (cf. above p. 182). Basale: 

 This joint has eight bristles ventrally: three a-bristles, one b-bristle, two c-bristles and two 

 d-bristles. The a-bristles are all relatively short, somewhat different in jength from each other, 

 the longest one about a quarter to a third of the length of the longest a-bristle in the preceding 

 species. The longest c-bristle is slighth^ shorter than the corresponding bristle in the preceding 

 species. The shortest of the d-bristles is in most cases somewhat displaced proximally; otherwise 

 these bristles show agreement in length, equipment and situation with the corresponding bristles 

 in C. (D.) levis. The dorsal side of this joint has four bristles: Three of these have about the 

 same tA'pe, length and position as the three dorsal bristles on this joint of C. (D.) levis, except 

 perhaps that the bristle just in front of the middle of the joint in the latter species is comparatively 

 somewhat shorter. The fourth of these bristles — which is noteworthy because no bristle of 

 this kind occurs in any of the other species belonging to this sub-family that have been described 

 in this work — has short, fine hairs, almost bare, is rather short, only about a third of the length 

 of the bristle situated just in front of the middle of the joint, and is placed rather near the prox- 

 imal limit of this joint. The exopodite has about the same size and type as in the preceding 

 species; its' end bristles are perhaps comparatively slightly shorter. E n d o p o d i t e: Of the 

 four ventral bristles on the first joint the two longest ones are somewhat different in length 

 from each other; the longest, which is somewhat longer than the posterior side of the second 

 endopodite joint, has rather numerous long secondary bristles, only indistinctly arranged in 

 groups, the other three have short hairs. The second joint, as in the case of the preceding 

 species, has on the proximal half of the anterior side a moderate number of bristles: from nine 

 to twelve more or less long bristles with short, fine hairs, of about the same proportions as the 

 corresponding bristles in the preceding species and, as in this species, of somewhat varying 

 lengths, and, in addition, about sixteen to twenty cleaning bristles (their number and development 

 difficult to ascertain with certainty because of their very dirty condition), more or less distinctly 

 arranged in from two to four steep rows directed obliquely upwards and forwards; the cleaning 

 bristles are of two types as in the preceding species, some with exceedingly fine double pectination, 

 some with coarser pectination ; the difference in pectination is, however, not so striking, the transition 



