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pl. XVII, fig. 27; cf. the accompanying figs. 7 and 8; both the.se organs are furnished proximal ly
with one or two verruciform processes and have exceedingly weak transverse creases distally.
The h-, i- and j-bristles are subequal, about as long as or somewhat shorter than half the length
of the g-bristle; they have a proximal part that suddenly becomes very narrow, about the same
as in the accompanying fig. 7; they are very thin and hyaline, irregularly rolied up and bare.
M a n d i b 1 e: — P r o topodite: Coxale: The toothed edge on the pars incisiva
has from twelve to fifteen teeth, the anterior one of whieh is of about the saine relative size and
type as in most other species of this genus, the others rather small, subequal, somewhat
irre-gularly triangulär (cf. the accompanying fig. 9); some of the posterior teeth are in sortie cases
a little less developed than in this figure, the most posterior one seems, however, almost always
to be well developed, sometimes it is even somewhat more powerful than in the above-mentioned
figure. Distal tooth-list: This is furnished posteriorly with a rather large and powerful.
fang-like, bare tooth, in front of which there is a single row of about 20—25 subequal, rather small,
smooth, triangulär serrate teeth; cf. the accompanying fig. 10. Proximal tooth list (fig. 11 ):
This varies somewhat in type, but agrees on the whole with the preceding list. It is armed
posteriorly with a rather large and powerful, fang-like, bare tooth, in front of which there is
a single row of rather small and somewhat irregulär pointed serrate teeth. In most cases it has,
in addition, unlike what is the case in the distal tooth-list, two or three rather powerful and large
fang-like teeth (which are most frequently somewhat smaller than the most posterior large tooth);
these have in most cases, at least proximally, some more or less well-developed secondary teeth.
The inside of this tooth-list is not furnished with close small spines. Both the tooth-lists are
of about the same width and are slightly narrower than the distal toothed edge of the pars
incisiva. The masticatory pad is rather high and narrow, about half the width of the
tooth-lists, and is divided into about four or five transverse ridges, armed with exceedingly fine, rather
short and exceedingly dense spines. The part of the pars incisiva that is surrounded by the
row of bristles and hairs is somewhat pad-like and has fine papillae, some of which are exceedingly
short. Basale: The six teeth on the distal edge of the endite are rather finely serrulated. The
single tooth on the outside of this process is in most cases somewhat smaller than in my fig. 19
of C. symmetrica, rather finely serrulated or sometimes even almost smooth. The antero-medial
bristle on this joint is comparatively long, in most cases almost as long as the proximo-anterior
bristle on the endite of this joint, which is about as long as in my fig. 22 of C. symmetrica.
There is no e p i p o d i a 1 a p p e n d a g e. E n d o p odite: The first joint lias only two posterior
bristles, both of which have short hairs; one is situated somewhat laterally and is about as long
as or somewhat longer than the total length of the anterior side of the two proximal endopodite
joints, the other is situated somewhat mediallv and is only about a half or a third of the length
of the former one. Of the three anterior bristles on the second joint the two longer ones are
in most cases somewhat longer comparatively than in my fig. 22 of C. symmetrica-, one of them
is about as long as the longest of the bristles on the end joint; the other is rather slightly shorter.
Pilosity: The second endopodite joint lias hairs on its anterior side.
Maxilla: — Protopodite: Only the antero-inner tube-bristle on the endite
of the procoxale lias long secondary bristles. Endite on the coxale: On the posterior process
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