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„spricht für eine Tiefseeforni; leider gestatten die Fänge keinen sicheren Schluß auf die Tiefe des
Vorkommens, da es sich durchweg um Vertikalfänge des offenen Netzes handelt. Am wenigsten
tief reicht von den „V a 1 d i v i a“-Fängen 55 V b (1200 m.), der „Albatros s“ erbeutete
Vertreter sogar aus nur 100 Faden (185 m.), so daß die Form, wenn sie, wie ich vermute, ein
Bewohner großer Tiefen ist, sicher gelegentlich zu geringeren Tiefen aufsteigt.“
This assumption seems also to apply to G. Müllen. This species too is probably to be
considered as being a form tbat lives mainly in deep water and that, like many other pelagian
forms, undertakes migrations up to lesser depths.
The specimens of S/S „M i c h a e 1 Sars“ and M/S „A r m a u e r Ha n s e n“ are
stored in B. Z. M., those of the „An tåret i c“ (on slides) in R. M. S.
Gigantocypris Mulleri n. sp. var. minor n. var.
In one of the samples of plankton from S/S „M i c h a e 1 Sars“ were found
two sexually mature females of this genus, which, although they bore a rather great resemblance
to the species described above, differed from it so essentially in so many respects that it seemed
to me best, as a preliminary, to distinguish them as a special form. This form has been arranged
as a variety under the above-mentioned species and has not been set up as a new species
especially for two reasons, partly because the preceding species appeared to be not inconsiderablv
variable and partly because one of the two specimens in question resembled this species
consid-erably more than the other in several respects. It is not impossible that we are dealing with
specimens of the above-mentioned species whose development has been checked by unfavourable
conditions. The answer to this question can only, however, be obtained after renewed
investigations, carried out with more abundant material.
To enable the reader to decide how far the two specimens resembled or were different
from the type species it seemed most convenient in the description to call one specimen (the
most divergent) the a-speeimen and the other the b-speeimen.
Description-. — Female: —
Shell: — Length: Specimen a attained a length of 9 mm., specimen b 10 mm. The
shape was about the same as that of the type species, but somewhat less globular, however;
proportion of length : height : width about 10 : 8 : 7, thus somewhat lower than the type
species. The medial bristles were considerably fewer than in the type species, but varied very
mueh in number; on the rostrum of specimen a about 45 bristles were found (cf. fig. XXX, on
which all the bristles are drawn), on the rostrum of specimen b about 60; on the list behind
the incisur about 40—60 bristles were found on the former specimen, about 40—50 on the latter.
Otherwise there was agreement with the type species.
First antenna: — The proportion between the joints is about the same as in the
type species; the second joint is, however, somewhat longer comparati vely; the third joint,
on the other hånd, is somewhat shorter comparatively. The anterior bristle of the third joint
is fixed at about the middle of the joint (in specimen a) or just proxima lly of this. All the
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