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fiele! on tlie upper lip is situated more in one plane; besides, as has been pointed out above, the
dorsal protubérance between the upper lip and the rod - shaped organ has only a
single point).
The lateral eyes are large.
Male: —
Shell: — Length: 2,1—2,2 mm.; length : lieight, about 1,4 : 1. Seen from the
side: The greatest height is situated about at the middle; the posterior part of the shell is
not perceptibly larger than the anterior part. The dorsal border is somewhat less flattened
anteriorly than in the female. With a rather well-developed, broadly rounded posterior corner
somewhat ventrally of half the height. In other respects the male shell is like that of
the female.
First antenna: — The bristles of the third and fourth joints seem to be somewhat.
though rather slightly, shorter than these bristles in the female. Bristles of the seventh joint:
The b-bristle is about as long as the anterior side of the second to the fourth joints; it has four
filaments, of which the three proximal ones have suctorial organs and the distal one, which
issues close to the distal of the three former ones, is short and bare; the proximal filament has
a powerful, rounded, verruciform process distally of the suctorial organ [about the same as in
figure 15 of C. (Vargula) norvegica]; the two other filaments with suctorial organs are rather
long and powerful, the distal one extending somewhat beyond the point of the principal bristle,
and having four suctorial organs distally, proximally of which a small wart, like a shaft of still
another suctorial organ, is to be found. The c-bristle is somewhat longer than the preceding
bristle; it has nine filaments; of these the three proximal ones have suctorial organs and are
of exaetly the same types as the filaments with suctorial organs on the b-bristle. Bristles of the
end joint: The f- and g-bristles are about as long as the whole antenna, the latter only slightly
longer than the former; the f-bristle has ten, the g-bristle eleven filaments. In other respects
this antenna agréés with that of the female.
Second antenna: — The protopodite and the exopodite are similar
to those of the female. The endopodite (fig. 8): The first and the second joints are rather
long and powerful, the latter not quite twice as long as the former, both almost uniformly thick;
the end joint is about a third of the length of the second joint, narrow, of about the same
thickness throughout its whole length, curved ventrally and distally furnished with a few
irregulär teeth. The bristles of the first joint completely agréé with those on this joint in the
female. The second joint has, at about two-thirds of the way along it, two subequal rather
short ventral bristles. The proximo-dorsal bristle of the end joint is somewhat shorter than
the total length of the two proximal joints; close to the point of the end joint there are two
exceedingly short bristles placed close together.
The m a n d i b 1 e, maxilla, f i f t h and s i x t h 1 i m b s are similar to those
of the female.
Seventh 1 i m b : — This also shows a great agreement with that of the female,
but the end comb seems, however, to be somewhat weaker; it has from nine to eleven distal
teeth and on each side of these from two to four proximal teeth.
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