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Sub-genus Macrocypridina * n. sub-gen.
Cypridina (part.), autoru in.
Description: — Shell: — The form is somewhat, though only rather slightly, different in
the males and the females. — It is oval with a well developed posterior corner. The rostral
incisur is comparatively small, moderately deep and rather narrow. Near the inner edge of the
incisur there are two medial bristles situated close to each otlier. Presumably with
comparatively weak calcification. The species belonging to this sub-genus are comparatively large.
First antenna: — This is long, siender and eight-jointed. The sensory bristle of
the fifth joint has thirteen sensory filaments. The b- and c-bristles of the seventh joint have
a similar modification in the males as that described above p. 223 for the sub-genus Doloria.
The proximal filament of these two bristles, which is situated a short distance from the base
of the bristles, is, however, comparatively rather slightly metamorphosed; it is of moderate
strength, is only slightly swelled proximally and is not strongly chitinized and spine-shaped
distally, but more hyaline and ending in a short and very fine (sensory?) hair like most of the
filaments on the bristles of the two distal joints of this antenna. The f- and g-bristles of the
end joint are very much lengthened, being considerably longer than those of the females.
Second antenna: — The protopodite has a medial-distal bristle. E x
o-p o d i t e: The bristle of the second joint is reduced. The natatorv bristles of the third to the
ninth joints have no trace of spines. The third to the ninth joints have basal spines. The
endopodite is similar in the males and females, more or less strongly reduced, often with
a reduced number of joints. The distal (sensory?) bristle of the end joint is very long.
Mandible: — Protopodite: The endite on the coxale is weakly bifurcated
distally; its spines are arranged in distinct groups, those situated medially and distally being
rather powerful. This joint has no bristles except for the small one on the endite.
Basale : Of the ventral bristles one d-bristle is very long and has numerous long secondary bristles
and short hairs distally, the rest are of moderate length or short and hâve short, fine hairs or
are bare. This joint has three dorsal bristles. Endopodite: The flrst joint lias four bristles
ventrallv. The end joint has seven bristles, of which one of the anterior ones is long and powerful,
claw-shaped, the rest being relatively short.
Maxilla: — Protopodite: Dorso-distally the coxale has a single bristle with
long, fine hairs. Proximally on the outside of the third endite there is a single bristle. On the
boundary between the basale and the first endopodite joint there are three bristles, one close
to the exopodite, one at about the middle of the inside of the endopodite and one on the anterior
edge of the endopodite. Dorso-distally on the coxale there is a rather large lamelliform e
pipo d i a 1 a p p e n d a g e. The exopodite is relatively well developed, has long, fine
hairs, situated close together, and is not displaced distally. The endopodite is relatively
short and very broad.
1 Il is probably best not to use names ending with Cypris (e. g. Giganiocypris, Pyrocypris) for genera belonging
to (’ypridini formes. This snffix may be reserved for real Cyprids.
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