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On the anterior side of this joint, on the powerful and conically rounded secondary tooth that
is directed forward, there is a single bristle; judging from the position of this bristle on the male
fifth limb it is presumably to be considered as homologous with the d-bristle in the sub-family
Cypridininae. The two distal exopodite joints in the species investigatcd by me were rather
small, furnished with a number of bristles. It may be pointed out that on all the species in
question the inner lobe of the third joint was furnished with three, the outer lobe with two,
bristles, thus the same number as is most frequently found in the species belonging to the
sub-family Cypridininae.
Male: — The e p i p o d i a 1 appendage of the p r o topodite is of about
the same size and type and has the same number of marginal bristles as in the female; its muscular
system is powerfully developed. The other parts of this limb are also of the same fundamental
type as in the female. It is somewhat, though only rather slightly, smaller than that of the
female, has a rather weak division into joints, its muscular system is almost entirely reduced
and all the chitinous parts are soft, thin and hyaline. The exopodite has four joints
as in the female. The two proximal exopodite joints are, as in the sub-family Cypridininae,
of about equal size. The main tooth of the first joint is represented by four, in exceptional
cases by only three, soft, hyaline, irregularly conical processes, with close, soft hairs; thèse
processes are of about the same size as or very slightly smaller than the corresponding constituent
teeth in the female. The inner tooth-like process of the second exopodite joint is represented
by a process of about the same kind as the one that represents the anterior constituent tooth
of the main tooth of the preceding joint. The equipment of bristles on this limb is the same or
almost the saine as that on this limb of the female. — G. W. MULLER states, 1912, however,
that there are considerably fewer bristles on this limb in the male than in the female. — AU
or almost all the bristles have close soft, long hairs at the middle, but they hâve no secondary
teeth distaUy. Pilosity: The hairs on this limb are more abundantly developed than in the
female. — It seems certain that this limb, like the maxiUa, cannot be used for mastication.
S i X t h limb: — Just as in the case of the maxilla and the fifth limb, ail the species
of this genus that were investigatcd by me showed a close resemblance with regard to this limb.
(On account of this it did not seem necessary to me to reproduce this for more than one species,
PL (Sel.) Appellöfi; a detailed description is given under the first species, Pli. (Pli.) globosa.)
It shows weak sexual dimorphism; G. W. MULLER states that this limb is similar in males and
females. The bristles on the endites of the p r o t o p o d i t e and the first exopodite
joint, like the anterior bristles on the second exopodite joint are, on an average, somewhat,
though in most cases only very slightly, more weakly developed in the males. In the female
all or almost all these bristles are furnished at the middle with long, stiff secondary brist les,
and are moderately stronglv pectinated distally; in the male they have long, soft hairs at the
middle and are finely pectinated or even bare distally. The second exopodite joint:
This is very mueh wider than it is long. It has abundant bristles, all situated on or near the
ventral edge, sometimes, however, some of them are considerably displaced dorsally on the
medial side. The posterior and the anterior of these bristles are not separated from each other
by any pronoimced gap. The posterior bristles are, on the average, somewhat longer than the
Zoolog, bidrag, Uppsala. Suppl.-Bd. 1. ’
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