258 TAGE SKOGSBERG 



Sixth limb (fig. 23) : — Protopodite: The first endite has one or two rather 

 long and powerful distal bristles, furnished with a few wreaths of long, stiff secondary bristles, 

 and, in addition, two short, plumous medial bristles. Second endite: This has two or three 

 rather long and powerful, subequal distal bristles, with long, stiff secondary bristles at the 

 middle and short hairs or else bare distally, and, in addition, usually four rather short, plumous 

 medial bristles; in one specimen five medial bristles were observed on one limb on this endite. 

 Third endite: This lias three rather long and powerful distal bristles, the middle one of whicJi 

 is somewhat shorter than the two others; all of them are of about the same type as the distal 

 bristles of the second endite; this joint has, in addition, one medial bristle of about the same 

 type and length as the middle distal bristle of this process. The e p i p o d i a 1 a p -p e n d a g e 

 of the protopodite is represented by five short, bare or almost bare bristles. Exopodite: 

 First joint: The endite has two distal bristles and one medial bristle; these are of about the same 

 type as the bristles on the preceding endite. Second joint: This has rather numerous bristles, 

 all situated very near the ventral margin; with a pronounced gap between the posterior bristles 

 and the others. The three jjosterior bristles — on one specimen they were four on 

 the limb of one side — are rather long and have long and soft hairs right to or 

 almost right to the point. The rest, from eight to twelve, the number varying from 

 specimen to specimen and also on the right and left limb of the same animal, are of 

 moderate and somewhat different lengths, most frequently all of the same type, furnished 

 at the middle with long, stiff secondary bristles, arranged to some extent in the form of 

 wreaths, and with short hairs distally. Pilositv: The inside of this limb has rather close, 

 short, fine hairs; along the ventral margin of the second exopodite joint there is a series 

 of short, stiff hairs laterally. 



Seventh limb (figs. 24 — 26) : — This is comparatively short, not quite half the 

 length of the shell. (On several specimens whose shells were fi-om 3,3 to 3,4 mm. long this limb had 

 a length of from 1,3 to 1,4 mm.) Cleaning bristles: From nine to eleven ventral bristles and 

 from eight to eleven dorsal ones are situated very close together distally. The relative lengths 

 of these bristles vary to some extent; in most cases, however, the most distally situated of 

 the ventral ones is of moderate length, the next distal one is relatively long, the rest diminish 

 somewhat in length, though rather irregularly, the more proximally they are situated, the 

 proximal ones being rather short; among the dorsal ones the distal ones generally are relatively 

 long, the proximal more or less short. Proximally of these bristles, scattered irregularly, there 

 are from nine to thirteen ventral bristles and from ten to fourteen dorsal ones; the lengths of 

 these also vary somewhat, but in most cases, however, the}^ are subequal and of moderate 

 length. The cleaning bristles are furnished with from one to six bells cut oft' transversally 

 distally; the tongue of the distal bell is also cut off rather transversally distally (cf. fig. 25); 

 proximally of the bells the cleaning bristles are smooth. The end comb consists of from seven 

 to eleven rather long distal teeth, rather pointed distally, decreasing somewhat in length the 

 more proximally they are situated, and, in addition, of from three to six considerably shorter 

 proximal teeth on both sides. The cavity dorsally of the end comb is rather deep; its dorsal 

 wall is furnished with an unpaired, rather high and narrow, distally rounded, chitinous peg, 



