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Rod-shaped organ: — The shaft reaches to about the third joint of the first
antenna or somewhat farther. The capitulum is about as long as or somewhat shorter than the
second joint of the first antenna and of about the type reproduced by G. S. BRADY and A. M.
NORMAN, 1896; see the appended fig. 3.
Upper 1 i p: — This is of about the same type as in my fig. 37 of C. symmetrica’, the
part between the combs is sometimes, however, notched somewhat deeper at the middle, about
the same as in my fig. 4 of C. Belgicae. The paragnates are of about the same type as
in my fig. 38 of C. symmetrica.
F e m a 1 e: —
Shell: — Length: Of the specimens investigated by me those from Skager Rak
meas-ured about 2,5—2,7 mm., those from Lofoten about 2,55—2,9 mm. and those from the Arctic Ocean
2,4—2,7 mm. Seen from the side it is of about the same type as in the male, but is
somewhat higher posteriorly. Seen from b e 1 o w it is also of about the same type as in the
male, but the posterior part is somewhat larger and the side contours evenlv curved. The
proportion between length and breadth is about 2,5 : 1. In other respects it is like that of the male.
First antenna: —- The division into joints is rather slight. The dorsal bristle on
the second joint is about as long as the total length of the two proximal joints of this limb and
has short hairs. The e-bristle is about twice as long as this limb, not at all or only very slightly
widened and sword-shaped distally; its anterior side is bare. The a-, b-, c- and d-bristles are
subequal, about a third of the length of the e-bristle. The first and second joints are partly
furnished with short hairs. These joints have yellowish-brown corpuscles.
Second antenna: — The protopodite is rather slightly weaker than in
the male. Exopodite: The proportion between the length of this brauch and that of the
protopodite is about 21—22 : 40. The proportion between the joints of this branch is about
the same as in the male. En dop o dite: This has two joints; sometimes, however, the little
third joint is weakly marked off. The f- and g-bristles are of about the same type and relative
size as in the male. The h-, i- and j-bristles, which have no distinctlv developed shafts, are
either of about the same relative length as in the male or else rather slightly longer. There is
an extremely small papilla between the h- and i-bristles. The second endopodite joint is bare.
Rod-shaped organ: — The shaft reaches somewhat in front of the point of
the first antenna; see the appended fig. 12. The capitulum is relatively somewhat shorter than in
the male and its shape is about the same as is described and reproduced by \ . VAvra, but varies to
some extent; see the appended figures 12—14.
Remarks: — It seems to be quite certain that the form dealt with above is identical with
G. burealis, G. 0. Sars, 1865. The supplementary description worked out by me is based on
material from the tvpe-locality of this species — Lofoten — and this material was defined by
G. 0. Sars himself as C. borealis.
Because of the uncertainty with regard to the relation of this species to the form (’.
maxima established by G. S. BRADY and A. M. Norman (cf. below) it is impossible at
present to give a complete list of synonyms of this species of G. < >. Sars’.
Zoolog, bidrag, Uppsala- Suppl.-Bd. I.
Synonym
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