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Conclioecia spinirostris C. Claus.
Conchoecia spinirostris (part.), C. Claus, 1874 a, p. 177.
» „ » ,, 1874 b, p. 6; pi. I, fig. S; pi. 11, fig. 11.
,, pellucida. G. O. SARS, 1887, p. 80; pi. XI. ligs. 1—4; pi. XII; pi. XIII,
figs. 1—4.
,, spinirostris. C. Claus, 1890, p. 7.
,, ,, ,, ,, 1891a, p. 56; pi. I; tigs. 1—12.
„ „ G. W. MULLER, 1894, p. 227; pi. 6, figs. 1—9, 13; pi. 37, figs. 10, 11.
„ ., G. S. BRADY and A. M. NORMAN, 1896, p. 689; pi. LX, fig. 22.
„ „ G. S. BRADY, 1902 a, p. 190.
,, ,, Ch. JUDAY, 1906, p. 18; pi. III, figs. 4—7.
,, „ (part.), G. H. Fowler, 1909, p. 252; pi. XXIV and XXV.
«
Description: — See C. CLAUS, 1891 a, p. 56 and G. \V. MULLER, 1894, p. 227.
Supplementär y description: — Male: —
Shell: — Length: The specimens investigated by me measured 0,9—1,05 mm.;
cf. p. 704 below. Length : height about 2:1; length : breadth about 2,25 : 1. Seen from
the side it is of about the type reprodueed in the accompanying fig. 1, i. e. it agrees very
well with the figures given by C. CLAUS and G. W. MÜLLER. Seen from below (fig. 2)
it has its greatest width at about the middle and has evenly curved side contours; it is broadly
rounded anteriorly, with an almost symmetrical rostrum, and somewhat pointed posteriorly.
The shoulder vault is rather well developed and always well rounded. The surface of the
shell has a few scattered rather long, soft hairs, especially on or near the rostrum. Seen
from inside: Selvage: On the rostrum this is more or less finely and iiregularlv
serrate-edged or almost smooth; it is about as wide as in pi. 37, fig. 10, G. \V. MULLER, 1894
(consequently rather considerably wider than in pi. I, fig. 2, C. Claus, 1S91 a) and has no large
spinedike process. Along the anterior margin of the shell and the anterior part of the ventral
margin it is quite smooth-edged or exceedingly finely serrulated; along the posterior half of the
ventral margin of the shell and for a short distance along the most ventral part of the posterior
margin it is finely serrulated; inside the remaining part of the ventral half of the posterior margin
of the shell the marginal spines of the selvage are somewhat larger than the more ventral ones.
The unsymmetrical glands have their exits at the usual place. There are no lateral corner
glands. On the anterior margin, just ventrally of the rostrum, 1 have not found „dicht
nebeneinander zwei je nach Erhaltung und physiologischem Zustand mehr oder weniger auffällige
Drüsen’4; cf. G. W. MULLER, 1906 a, p. 99. The medial glands along the posterior margin of
the shell are of about the same type as is described for C. oblonga on p. 618 above. I did not
succeed in discovering as cleep a junction between the lamellae of the shell inside the rostral
incisur as in pi. 37, fig. 10, G. \V. MULLER, 1894; on the other hånd 1 was able to find
Zoolog bidrag, Uppsala. Suppl.-Bd. I.
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