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joint: The c- and d-bristles are rather slightly shorter than this joint; they have short hairs
or are almost bare. The e-bristle is short. The g-bristle îs somewhat shorter than the
protopodite, the f-bristle is about a quarter or a fifth shorter than the g-bristle; both these bristles
are narrow distally and have sparse, short hairs. Third joint: The clasping organs are of the
types reproduced by G. W. MÜLLER, cross-striated distally (in the specimen investigated by
me, however, they had no distal papilla as in the figures given by this writer). The h-, i- and
j-bristles are subequal, somewhat less than half the length of the g-bristle and somewhat narrower
than the f-bristle; they all have faint indications of shafts and are almost quite bare.
Man dible: — Protopo dite: Coxale : The toothed edge on the pars incisiva
has about ten to twelve teeth, the posterior ones are, however, so small that their number is
difficult to decide. Distal tooth-list (fig. 6): This is of about the same relative size and type
as has been described above for C. oblonga ; sometimes, however, it has only one large posterior
tooth; the number of teeth varies from fourteen to twenty. Proximal tooth-list: This is about
as wide as the distal one. It has three or four powerful, conical, smooth posterior teeth and in
front of these a dense row of rather fine serrate teeth; see the accompanying fig. 6. In other
respects this joint is of about the same type as has been described below for C. symmetrica.
Basale: The six teeth on the distal edge of the endite are finely serrulated. The sing’: tooth
on the outside of this endite is of about the same relative size and type as in C. elegans. The
epipodial appendage consists of a small verruca and a very short bristle.
Endo-p o d i t e: The first joint has four posterior bristles, which have about the same positions and
lengths as in C. symmetrica and have short hairs.
Maxilla: — The bristle on the basale, like most bristles on the anterior and posterior
edges of the first endopodite joint, hasalarger or smaller number of rather long secondary bristles.
The end joint is relatively short; see the accompanying fig. 7.
Fifth 1 i m b: — This is of about the same type as in C. symmetrica, but the longer
of the two tube-bristles on the second endite of the protopodite has short hairs and the
endopodite has no spines. The two shorter of the three antero-ventral bristles on the
endopodite are sometimes furnished with short hairs or sometimes one or both of them have
rather long secondary bristles. First exopodite joint: From one to three of the four
or five proximo-ventral bristles are sometimes furnished with rather long secondary bristles;
sometimes they all have short hairs. One of the three or four ventero-distal bristles is
sometimes furnished with rather long secondary bristles, sometimes they all have short hairs.
The protopodite and the first exopodite joint are partly furnished with rather long hairs.
S i X t h 1 i m b : — The bristles of the endopodite have short hairs.
Exopodite: First joint: One of the anterior ones of the five ventral bristles is of about the same type
and relative length as the corresponding bristle in my fig. 29 of C. symmetrica, the others are
relatively short and have short hairs.
Penis: — This is of about the same type as is reproduced by G. W. Müller ; see the
accompanying fig. 8. It has four oblique transverse muscles at the middle. Distally of these there is
a collection of powerful muscles which have one end attached to the base of the copulatory
appendage, from which point they radiate out like afan towardsthe antero-dorsal side of the organ.
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