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in most cases (always?) no such secondary bristles at all on the bristles of the endite of the
coxale. Apart from these bristles the procoxale and the coxale are quite without bristles.
The basale forms on the inside a somewhat lobe-like projecting part, furnished in most
cases with a single bristle; apart from this the joint has no bristles at all. Endopodite:
The first joint had in the species investigated by me from four to six bristles on the anterior
edge and from two to four bristles at about the middle or somewhat distally of the
middle of the posterior edge; in addition there is a single bristle on the inside of this joint
somewhat distally of the middle or rather near the distal boundary. The end joint is armed
with five or six distal bristles.
F i f t h 1 i m b : — This has no dimorphism or at any rate it is scarcely perceptible.
-Pr o topodite: The basale is furnished with traces of two endites. Epipodial
plate: The number of the marginal bristles is almost quite constant within this whole group;
the folio wing numbers were observed on all the species investigated by me: five bristles in the
proximal, five (four in only one species) in the middle and four in the distal group; in exceptional
cases, however, an increase or a decrease of one bristle may be observed in one or more specimens
in one or two of these groups. All these bristles are comparatively long, with long secondary
hairs right out to their points, except the proximal one in the proximal group, which is only
about as long as or somewhat shorter than half the length of the others, and has short,
fine hairs. Exopodite: This has always three joints. Its first and second joints are
rather elongated and of about the same length. First joint: This has a moderate number
of bristles ventrally; there is only one bristle dorsally on the joint and it is in most
cases very long; in addition there are laterally, at about or somewhat in front of the middle
of the joint, in most cases one, sometimes two, bristles. Second joint: This has only
three bristles, one of which is situated dorsally, at or somewhat in front of half the length
of the joint, the two others close to each other at the corresponding place on the ventral
side of the joint.
Sixth li mb: — This is with or without dimorphism. — Epipodial plate:
The number of marginal bristles seems to be almost quite constant within the whole of this
sub-family. The following numbers were observed by me on all the species of this group that
were investigated for this treatise: seven bristles in the proximal group, five in the middle one
and five in the distal one. Just as in the case of this appendage on the preceding limb an increase
or decrease of one bristle in one or two of these three groups may, however, be observed on single
specimens. These bristles are of the same type and about the same length as those on the
epipodial plate on the fifth limb; I ought perhaps to point out especially that, just as in the case
of this plate, so, too, on the sixth limb the proximal bristle in the proximal group has short hairs
and is relativelv short, about as long or not quite as long as half the length of the other bristles.
Endopodite: This has only one or two bristles. Exopodite: The three proximal
joints are rather elongated and often of about the sanie length. The first joint has a moderate
number of bristles ventrally, and in most cases one bristle dorso-distally. The second joint has
only one, rarely two bristles, situated ventrally, in most cases at about half way along
the joint. The third joint has in most cases two bristles, one of which is situated dorsally,
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