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filaments on the distal bristles are either bare or furnished with sonie few short, weak secondarv
spirues. Pilosity: The whole antenna is hairless or at any rate bas only extremely sparse and verv
short hairs.
Second antenna: — Pro t o p o d i t e: The medial-distal bristle is relativelv
long, attaining to about the same length as that of the longest bristle in the proximal group
of bristles on the first joint of the endopodite (fig. 7). Exopodite: This is rather long;
yet it is comparatively somewhat shorter than the exopodite of other species of this sub-familv
that are dealt with in this treatise; by way.of comparison the following figures may be given:
the length of the shell: the length of the exopodite is about 4 : 1 in this species, 3,5 : 1 in Cypridina
(Varqula) norvegica, 3 : 1 in C. (V.) megalops, and 3,3 : 1 in Cypridina (Macrocypridina) castama.
The proportion between the length of its first joint and the united length of all the following
joints is about 3 : 2; the second joint is about as long as the total length of the third and fourth
joints. The bristle of the second joint is about as long as the total length of the third to the
ninth joints or somewhat longer; distally it is bifurcated, cf. the adjoining figure 20. The
length of the longest natatory bristles: the length of the whole exopodite is about 5 : 3. The
end joint has four natatory bristles; the dorsal one, which is the shortest, is about the same
length as the whole of the exopodite. All the natatory bristles are fitted with well-developed
and rather broad natatory hairs along almost their whole length. The third to the ninth
joints have rather weak basal spines (these are, however, stronger than those reproduced for
Cypridina (Macrocypridina) castanea, fig. 11 of this species). The third to the eighth joints
are in most cases furnished laterally-distally with sparsely placed weak spines; medially-distallv,
on the other hånd, they have none of these. Endopodite (fig. 7): This is very long and
narrow; the second joint is about twice as long as the first and third joints. The first joint has
a group of four bristles proximally, one of which is rather long, about as long as the second
joint or somewhat shorter; the other three are subequal, not quite attaining to half the length
of the former; in addition on this joint, somewhat distally of this group of bristles, there is a single
bristle, about as long as or somewhat longer than the longest proximal one; all these bristles
are bare or have extremely fine short hairs. The second joint has a short bristle distally.
y* to ys the length of the end joint. The bristle of the end joint is considérable longer than the
endopodite, in some specimens even extending somewhat behind the posterior boundarv of
the protopodite.
M a n d i b 1 e: — The type is about the same as that shown in pl. II. fig. 7, Tu. SCOTT,
1912 b. — Protopodite: The endite of the coxale is of about the same type as that
shown in pi. I. fig. 20, G. W. MÜLLER, 1895; it has very numerous spines, is weakly bifurcated
distally, the two distal points are somewhat more powerful than the spines and, unlike the latter,
armed with rather powerful secondarv spines; between the two distal points there is a low
process (cf. p. 182 above). The basale has ventrally three short a-bristles, somewhat different
in length, furnished with short hairs or spines; in front of the most anterior of these bristles
there is an extremely short almost peg-like bristle; in front of this, with almost the same situation
and proportions as in Th. Scott’s figure mentioned above, there are one b-bristle, two c- and
two d-bristles; the b-bristle was missing on one mandible in the specimen from M S ,,A r m a u e r
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