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Halocypris concha + II. pelagica, G. S. BRADY and A. M. Norm AN, 1896, pp. 702, 703;
pl. LXII, figs. 14—19.
„ „ V „ „ G. S. Brady, 1897, p. 77.
,. concha, A. Scott, 1905, p. 370.
,, pelagica, P. T. Cleve, 1905, p. 131.
„ inflata, G. W. MÜLLER, 1906 a, p. 50; pl. VII, figs. 19—28.
,, ,, ,, ,, ,, 1906 b, p. 2.
,, concha -f H- pelagica, V. VÂVRA, 1906, pp. 63 and 64.
„ „ „ „ „ Cil. JUDAY, 1906, p. 27; pl. VII. figs. 4—7.
,, inflata, G. W. MÜLLER, 1908, p. 65.
,, ,, + H. globosa, TH. SCOTT, 1912 a, p. 587; pl. XIII, figs. 29—32.
„ „ G. W. Müller, 1912, p. 58.
Description: — See C. Claus, 1891a, pp. 77, 78 and G. VV. MÜLLER, 1906 a, p. 50.
Supplemenlary description: — Male: —
Shell: — The length varies, according tu G. W. MÜLLER, 1906 a, between 1,15 and
1,75 mm. Of the mature males investigated by me 29 (from ten different stations) had shells
from 1,4—1,6 mm. long; thus in these spécimens this character was subject to rather slight
variation; one specimen, from S. A. E. station 116, only attained, however, a length of 0,95 mm.;
with regard to the latter specimen see p. 598 below. Length : height about 1,45 : 1; length:
breadth, about 1,65 : 1. Seen from the side (see the accompanying fig. 1), it has
generally the same type as observed by G. W. MÜLLER; cf. this writer, 1906 a, pl. VII, fig. 20. The
little male from station 116 was, as is shown in fig. 2, of a somewhat different type. Transitional
forms between these types were found. Seen from beneath the shell is very broad
and lentil-shaped, with its greatest breadth somewhat in front of the middle; the side contours
are well and uniformly rounded and the rather well rounded anterior and posterior ends are
of about the same size. Seen from be h ind (fig. 5; c? 7: $) it is somewhat heart-shaped,
as the dorsal margin is slightly concave. The sculpture of the surface of the shell
is as described by G. W. MÜLLER; rather sparse short hairs were observed on the surface of the
shell. Seen from inside: The hinge was of about the same type as is reproduced in
pl. XXII, figs. 1, 2 and 3, C. CLAUS, 1891 a. The selvage is rather broad along the anterior
and ventral margins of the shell (ventrally of the incisur and along the anterior and middle
part of the ventral margin of the shell the selvage is so broad that when the shell is pressed
beneath the coverglass, it extends somewhat beyond the margin of the shell), it becomes more
and more narrow posteriorly until it ccases altogether at about the boundary between the ventral
and posterior margins of the shell or somewhat more dorsally, sometimes it continues up along
the posterior margin of the shell to about half the height of the shell. On the anterior half of
the shell — and on the rostrum too — the selvage has a smooth edge; from a point at or somewhat
behind the middle of the shell it is finely and fairly uniformly serrated (see fig. 6i. The selvage
is finely cross-striated along the greater part of its length. Along the free margin of the shell,
about half wav between the selvage and the margin of the shell. there are the openings of a large
Zoolog, bidrag, Uppsala. Suppl.-Bd. I. ’ 1
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