338 TAGE SICOGSBERO 



In other words the first joint is rather consideraMy lonyer tlian the total lonp;th of ;ill (lie followin;^ 

 joints, the second joint is about as long as tin- next two joints |)ut tn^ctlicr. The luistlc ol' the 

 second joint is somewhat longer than the eight distal joints and is fuinislicd ventrallv with 

 about seventeen or eighteen strong secondary teeth, dorsally with ,i somewhat, smaller number 

 of weak aiul short ones. The projiortion between the length oi ihe longest natatory bristles 

 and that of the whole exopodite is about three to two. The natatory bristles are furnished with 

 broad, well developed natatory hairs. The end joint has inur bristles of which the dorsal 

 one is about as long as the total length of the six or seven distal joints ajid is I'uriiisluMl with 

 well developed long natatory hairs. The second to the ninth joints have powerful and rather 

 long conical basal spines, which decrease somewhat in length the more proximally they are 

 situated, the one on the second joint being rather small, those on the fourth to the eighth joints 

 are equal to or even exceed the length of the following joint. The endopodite is well 

 developed and is of exactly the type reproduced for C. (Vargula) norvegica. The first joint has 

 a group of foiu' bristles proximally, one of which is somewhat more than twice the length of 

 the three others and is somewliat shorter than the second joint; this joint has, in addition, 

 ventrallv at the middle a single bristle, which is somewhat longer than the longest proximal one. 

 The second joint has veutero-distally a single bristle, which is not quite as long as the end joint. 

 This bristle, like the two long ones on the first joint, has short hairs; the three short proximal 

 ones are bare. The distal bristle of the end joint is not quite twice as long as the endopodite. 

 M a n d i b 1 e (fig. 6) : — Pro t o p o d i t e : The endite on the coxale has very 

 numerous spines; it is weakly bifurcated distally; the tw^o distal points are somewhat, though 

 ordy rather slightly, coarser than the other spines and like these they are smooth. Basale: 

 This has seven bristles ventrally: two a-bristles, one b-bristle, two c-bristles and two d-bristles. 

 Of these the a-, b- and c-bristles are very short; the longer of the d-bristles is about as long 

 as the second endopodite joint, the other is about V4 — Vs of this length. Of the three dorsal 

 bristles the proximal one is attached a short distance in front of the middle of the joint 

 and is somewhat shorter than the longest d-bristle; the longest distal bristle is about as 

 long as or somewhat longer than the mentioned d-bristle, the other distal bristle is less than 

 half the length of its neighbouring bristle. All three are of the same type as the long 

 d-bristle, i. e. they have long secondary bristles arranged in irregular wreaths and 

 have short hairs distally. The exopodite is about as long as the dorsal side of the 

 first endopodite joint; of its two bristles the proximal one is of about the same length 

 and type as the shorter of the distal bristles situated dorsally on the second protopodite joint; 

 the distal one, on the other hand, is very short, extending only slightly beyojid the point of the 

 exopodite, and has short, stiff hairs situated very close together distally. Endopodite: 

 Of the foiir ventral bristles on the first joint the two longest are of about the same type as the 

 long bristles on the second protopodite joint, i. e. they have long secondary bristles arranged 

 in irregular wreaths; the two others have short hairs. Second joint: On the anterior side there 

 are a great number of bristles of different types. Some of these, about eighteen, are more or 

 less long; among these there are some which have long, stiff secondary bristles arranged 

 in irregular wreaths, distally of which there are close (as in the specimen shown in fig. 7) or 



