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are a few rather short, stiff spines, but otherwise this bristle is bare. The a- and
c-bristles are subequal, about as long as the second joint of this limb; the a-bristle lias an
accessory saccule (see the appended fig. 3) and is more or less irregularly
bent; the c-bristle lias no accessory saccule and is more or less straight.
Ail the joints are quite bare.
Second antenna: — P r o t o p o d i t e: In specimens with
shells about 2,2 mm. long this part measured about 1—1,1 mm.
Exopodite: The proportion between the lengtli of this brauch and
that of the protopodite is about 18—20 : 40. The proportion between
the length of its first joint and the total lengtli of the eight distal joints
is about 10: 4—5. The proportion between the length of the longest
natatory bristles and that of the exopodite is about lö—18 : 10. The
first joint has spines proximo-dorsally, but these form no distinct row
as in my fig. 13 of C. symmetrica. Endopodite (see my fig. 8):
First joint: The processus mammillaris has a small distal verruca. The
a-bristle is bare; the b-bristle is bare or has only sparse short hairs.
Second joint: The c- and d-bristles are somewhat shorter than this joint
and are bare or almost bare. The e-bristle is short. The g-bristle is
about as long as or in most cases somewhat shorter than the protopodite;
it is rather broadly sword-shaped distally and has sparse short hairs along
one edge.
The f-bristle is about a third shorter than the g-bristle and is
also somewhat sword-shaped distally and in most cases bare. Third joint:
The clasping organs are of the types described and reproduced by
V. Vâyra ; see the appended figs. 8, 9 and 10. The right clasping organ is
in most cases furnished proximally with two verrucae of about the same
types as in the figure just mentioned and, in addition, with small, fine spines
along the concave side; distally it has transverse creases and an
exceed-ingly small hyaline papilla. The left clasping organ is also cross-grooved
distally and lias an exceedingly small hyaline papilla; its proximal angle
varies somewhat in type. The h-, i- and j-bristles are about half as long
as the g-bristle. The h-bristle bas a short but very sharply marked
shaft, the i- and j-bristles have a shaft that is somewhat longer but only
weakly developed. Just distally of the shaft these bristles are somewhat
thicker than the g-bristle. Ail these three bristles are bare.
Mandible: — Protopodite: Coxale: The toothed edge
on the pars incisiva has from about eight to twelve teeth; this
com-paratively great variation was not due to the specimens investigated being
from different localities, as the extreme numbers could be observed in
specimens from the same locality. The posterior ones of these teeth are
often somewhat more strongly developed than in my fig. 16 of C. symmetrica. Distal tooth-list:
This is of about the same relative size and type as lias been described above for C. oblonya.
Fig. CXXXVI.
Conchoeciu burealis G.
O.Sahs. (J.— 15. Distal
part of the d-bristle:
390 X. (From a
specimen from Lofoten.)
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