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and c-bristles of the male first antenna and the development of the endopodite of the
second antenna in the male.
With regard to the b- and c-bristles on the first antenna of the male one might say with
fairly great certainty that originally in the sub-ordo Cypridiniformes they were not provided
with suctorial organs for seizing the female. For in this group an equipment of this kind has
so far been observed only in the sub-family Cypridininae; in all the representatives known
so far of the sub-family Philomedinae and of the families Rutiderrmtidae, Sarsiellidae and
Asteropidae such organs are, on the contrary, entirely lacking.
With regard to the. other of the two characters mentioned one might say with equally
great certainty that the endopodite of the male second antenna in the Cypridiniformes was
originally developed as a more or less powerful, three-jointed clasping arm used for seizing
the female. As early as 1890 (p. 218) G. W. MÜLLER expressed this view. This assumption is
supported by the occurence of an endopodite modified in this way both in the sub-families
Cypridininae and Philomedinae and in the family Asteropidae. In the family Sarsiellidae traces
of such a development can still be verified. In the family Rutidermatidae males are unknown.
A classification of the genera belonging to the sub-family discussed here according to
these two characters shows the following result:
The b- and
c-bristles
with
suckers.
\
The b- and c-bristles have
proxi-mally a rather short and powerful
branch, furnished at about the
middle with a rather large and
powerful sucker ; distally of this
one or two rather long and
powerful branches are found, which have
distally one or usually a row of
very small suckers all of about
the same size.
The b- and c-bristles with a
powerful rather long branch, furnished
distally with a number of suckers
of moderate size, all arranged in
an umbel.
The b- aud c-bristles with one or
more rather short branches all
with a rather powerful sucker in
the middle.
The b- andj
c-bristles .1
without any |
suckers. i
Cypridinodes
Cypridina
(sensu str. efcmeo)
Macrocypridina
Var gula
The endopodite of the
male second antenna
is not developed as a
clasping organ.
Doloria
Codonocera
( ru/antocypris
The endopodite of the
male second antenna
developed as a
powerful clasping organ.
( Wossophorus
CUissiltcalion
according to these
characters.
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