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Maxilla (see the appended figs. 23—26): — The end joint of the endopodite is
rela-tively long, about the same length as in C. borealis.
F i f t h 1 i m b: — This is of about the same type as in my fig. 27. P r o t o p o d i t e:
The longer of the two tube-bristles on the second endite has long secondary bristles.
Endopodite: One of the three ventral anterior bristles is of about the same length and type as
the long bristle on the first endite. The two others are somewhat shorter; one of them has short
hairs, the other usually has rather long secondary bristles. On the outside the endopodite is
furnished anteriorly with a number of short spines. Exopodite: First joint: The
ventero-medial group has two bristles, the proximo-ventral one has four or five bristles and the
disto-ventral one three or four bristles. One or two of the proximo-ventral ones and the same number
of the disto-ventral ones are usually furnished at the middle with long hairs. This limb is
some-times bare, sometimes the protopodite and the first exopodite joint are partly furnished with
moderately long hairs.
S i X t h limb (see the appended fig. 29): — The ventral bristle on the end joint has
short hairs.
Seventh limb: — The end joint has spines; see the appended fig. 31.
Penis: —- This is of about the type reproduced in the appended fig. 32. It has about
six to eight oblique transverse muscles at the middle, distally of which there are no muscles.
The copulatory appendage is well developed and varies somewhat in type; in most cases it is
rather wide and rounded as in the figure just mentioned.
Furca (see the appended figs. 33 and 34) : — Behind the claws there is an unpaired
short-haired bristle, about as long as the sixth or seventh claw.
Ro cl- s haped organ: — The shaft reaches to about the distal boundary of the
second joint of the first antenna or to the point of this limb. The capitulum (see the appended
figs. 6 and 7) is of about the type reproduced by G. W. MÜLLER, about as long as or somewhat
shorter than the second joint of the first antenna.
Upper 1 i p (see the appended figs. 35—37): — The part between the combs on the
postero-ventral edge of this lip is only slightly concave in the middle. The paragnates
are of about the type reproduced in the appended fig. 38.
Female: —
Shell: — Length: According to G. W. Müller, 4,1—4,4 mm. Of the specimens
investigated by me one (abnormal) measured 4,0 mm., 32 were 4,4—4,6 mm. and one was
4,7 mm. long. Seen from the side it is almost entirely of the same type as the male shell;
it differs by having the rostrum somewhat longer and perhaps somewhat straighter and by
being in most cases relatively somewhat higher posteriorly. Seen from below itis also
of about the same type as in the male, but the anterior part is not or is at least scarcely
percept-ibly larger than the posterior part and the side contours are more evenly curved.
F i r s t antenn a (see the appended fig. 10) : — The division into joints is fairly distinct.
The dorsal bristle on the second joint is about as long as the a—d-bristles and has short hairs.
The e-bristle is about twice as long as this limb; it is only slightly sword-shaped distally and
its anterior side is bare. The a-b-c-d-bristles are subequal, about a third of the length of the
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