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S i X t h 1 i m b: — Endopodite: This has one or two bristles, which are sometimes
fnrnished with short hairs, sometimes with long ones. Exopodite: First joint: At about
the middle of the ventral side there are one or two bristles, one of which is rather long and has
long hairs and the o ther usually short and with short hairs. Disto-ventrally there are two or
three bristles, all of which are usually rather short and have short hairs. The two dorsal bristles
on this joint are also short and have short hairs. Sometimes all the bristles on this joint have
short hairs.
Penis: — This is of about the same type as in C. symmetrica, but the copulatory
appendage is considerably narrower, about as narrow as in C. Haddoni.
Furca: — Behind the claws there is an unpaired bristle, which is about as long as
the sixth or the seventh claw.
Rod-shaped organ: — The shaft reaches to about the distal boundary of the
second joint of the first antenna or to the point of this liinb. The capitulum (see the appended
hg. 7) is about as long as or somewhat shorter than the second joint of the first antenna and is
of about the type reproduced by G. W. Müller.
Upper 1 i p : — The part between the combs is of about the sanie type as in my fig. 4
of C. Belgicae. The paragnates are about the saine as in C. symmetrica.
F e m a le: —
Shell: — Length: According to G. W. MÜLLER 2,35 mm. The specimens investigated
by me measured 2,0—2,25 mm. Length : height about 2:1; length : breadth about 2,8 : 1.
Seen from the side (see the appended fig. 2) it is of about the same type as
the male shell, but is somewhat higher posteriorly. Seen from b e 1 o w it has its
greatest width at about the middle and the anterior part dominâtes somewhat less over the
posterior part; the side contours are evenly curvecl; see fig. 3. In other respects it is like
that of the male.
First antenna: — This has rather distinct joints. The bristle on the second
joint is about as long as the capitulum on the rod-shaped organ and has short hairs. The e-bristle
is not quite twice as long as this limb and has on its anterior side a similar equipment to that of
the male; it is not sword-shaped distally. The a- to the d-bristles are subequal and about a third
of the length of the e-bristle. The first and second joints are partly furnished with short,
fine spines.
Second ante n n a : — The p r o t o p o d i t e is somewhat weaker than in the
male; it attains, a length of about 0,9 mm. in specimens whose sliells are 2,15 mm. long.
Exopodite: The proportion between the length of this brancli and that of the protopodite
is about 17 : 30. Endopodite: This lias two joints. The g-bristle is not cpiite so
long as the protopodite, the f-bristle is about a third or a quarter shorter; otherwise
they are like those of the male. The h-, i- and j-brist-les are about half as long as the
g-bristle or somewhat shorter or longer; they have sparse short hairs. The second
joint is bare.
R od -shape d o r g a n: — The shaft extends to about the point of the first antenna.
The capitulum is of the type reproduced and described by G. W. MÜLLER.
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