1213 
a female these measurements are 0.6 mm., 0.35 mm. and 0.35 mm. 
That these Ostracods belong to the Cytherzis genus is apparent 
from the following characteristies. Viewed laterally, the firm cara- 
paces are long and square, while the front part is higher than the 
posterior part. On ‘account of the greater length, the ventral edge 
is in the male ones almost parellel with the hinge line. 
The right valve has at each of the extremities of the hinge line 
one tooth, while the left one has only one altogether, which is 
situated behind the cavity of the front tooth of the right valve. In 
the place, where the front teeth are, each valve has a glassy globular 
tubercle on the outer surface. The right valve has a furrow between 
the two teeth, which is bounded by two raised ridges, of which 
the outer is highest. With the left valve however the hinge line is 
sharp. while it fits in the furrow of the right one. I have not been 
able to see, that the left valve also possesses a furrow on the 
hingement, of which the inner ridge is higher than the outer, as 
Bosqver (1, p. 50) remarks. The furrow on the hinge line of the 
right valve and the sharp hingement of the left one are both cut 
by cross furrows. 
A little in front of the middle the ventral edge is with both 
valves somewhat turned inside. In that place the left valve overlaps 
the right one. This is undoubtedly the reason, why Bosquer (1, p. 50) 
and LIENENKLAUs (8, p. 174) say, that the left valve is higher than 
the right one and overlaps the latter a little. However I found here 
and also in other Cythereis species, just as it is described by Bosquer, 
that the right valve possesses a furrow on the remaining parts of 
its free edges, in which, when the carapace is closed, the sharp 
edge of the left valve is laid. Thus the valves of the carapace are 
unequal, while the right one as a rule overlaps the left. 
The “Innenrand” runs almost everywhere parallel with the edges 
of the carapace. With this the “Verwachsungslinie” coincides. As 
a rule the lines are straight, sometimes crenelated. 
The “Porenkanäle” are numerous. Sometimes they are bifurcated, 
a thing which, according to Mürrer (11, p. 336), happens very 
seldom in the Cythereis species. The four posterior muscle impressions 
can be seen distinctly. This is not the case, however, with those 
situated in front. 
I think I may accept, that the above discussed Ostracods-rests 
originate from representatives of Cythereis Goujoni G. S. Brapy and 
this for the following reasons. From the description and the sketches 
which Brapy gives of this species it is shown, that the sizeand shape 
of the male as well as of the female specimens and their sculpture 
