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distinguished by being fiirnished at the middle with a wreath of long, sti ff secondary bristles,
contrary to what is usual in bristles of this group. The c- and d-bristles are of about the same
type as each other, with close long, soft hairs at the middle and short hairs distally; both are
moderately long, the former so me what shorter than the latter (about the same as in figure 22
of C. (Vargula) norvegica). The two lobes of the third joint (fig. 19, d1 = $) are of moderate
size, like the end joint. The inner lobe of the third joint has distally two moderately long bristles
with short hairs or bare; proximally-posteriorly it has a single bristle, which is somewhat shorter
than the distal ones and which has long hairs at the middle and short ones distally. The outer
lobe of this joint has two moderately long distal bristles with short hairs or almost naked. The
end joint is furnished distally with four moderately long bristles somewhat different in length
and with short hairs. The proportion between all the bristles of the two distal exopodite joints
seems to be fairly constant and is shown in the accompanying figure. Pilosity: The outer
lobe of the third exopodite joint and the end joint are partly furnished with soft hairs placed
close together.
S i X t h 1 i m b (fig. 20): — Protopodite: The first endite has one rather long
and powerful distal bristle, furnished with a few oblique wreaths of long, stiff secondary bristles
and two short, plumous medial bristles. The second endite has two rather long and powerful
distal bristles, of which the dorsal one is somewhat shorter than the other; both are furnished
at the middle with long, stiff secondary bristles and with short hairs distally; this endite has,
in addition, two short, plumous medial bristles. The third endite has two rather long and
powerful distal bristles, furnished at the middle with one or a few wreaths of long, stiff secondary
bristles and with short hairs distally; between these two bristles there is a short and somewhat
plumous bristle. The epipodial appendage of the protopodite is represented by
two ratlier short bristles with short hairs. Exopodite: The endite of the first joint has
two bristles, one rather long and powerful, of the same type as the long distal bristles on the
preceding endite, the other rather short, with long hairs at the middle and short ones distally.
The second joint has from six to eight moderately long bristles, all of which are situated very
near the ventral edge; there is a rather pronounced gap between the posterior and the other
bristles. The two posterior bristles have long, soft hairs right out to their points; the bristle
that is situated nearest to them has soft, long hairs at the middle and short hairs distally; the
other three or five bristles are furnished at the middle with long, stiff secondary bristles, arranged
in most cases in two very distinct wreaths; distally they have short hairs. Pilosity: On the
inside this limb is furnished with fine, short hairs, placed close together; the second exopodite
joint has laterally a series of short stiff hairs along the ventral margin.
Se venth limb (fig. 13): — This is weak, almost of a larval structure and very
short comparatively, being only about a third of the length of the sheik It is furnished with
eight cleaning bristles; six of these, three dorsal and three ventral ones, are situated very close
together distally, the two remaining ones are situated somewhat more proximally, one on the
dorsal and one on the ventral edge. The bristle situated most distally, both among the dorsal
as well as among the ventral ones, is comparatively long, the otliers are moderately long or
rat-her short. The cleaning bristles are furnished with three or four belis cut off transversally
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