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ones and the rest. They are somewhat different from each other in length and strength, most
of them being moderately long and strong, some of those situated more anteriorly rather short
and weak. Some of these bristles, especially the short ones, are furnished only with short,
stiff secondary bristles, the others have wreaths of long, stiff secondary bristles in the middle
and short ones distally; the wreaths of secondary bristles are rather few on the anterior
bristles, more numerous on the posterior ones. The two or three posterior bristles
-whose long secondary bristles are of the same type as on the other bristles, stiff and
arranged in wreaths — are bare or have rather fine short hairs distally. Pilosity: The inner
side and the ventral part of the outer side of the second exopodite joint have numerous groups
of short, stiff, fine hairs.
Seventh limb: — This is unusually long; we may mention that on two specimens,
one with a shell 15 mm. long, the other 14 mm. this appendage attained a length of 22 mm.
and 20 mm. respectively. The distal V7 of the limb is armed with bristles. The position and relative
length of the bristles is about as is shown in pl. II, fig. 11. TH. SCOTT, 1912 b, but we have,
however, to notice that whereas in this figure — presumably owing to a mistake — of the
proximal scattered cleaning bristles two are never fixed on the same side of one and the saine
joint, in my specimens such a duplication is by no means un common. The number of the
cleaning bristles varies from about 90 to about 130—140 on each side, the numbers being,
however, very difficult to détermine with certainty on account of the closeness of the bristles
to each other distally on the limb. The bristles (fig. 24) are armed distally with 1—10 bells
which are most frequently distally eut obliquely; the tongue of the distal bell is also cut
somewhat obliquely; the presence of so few bells as one or two is, however, very rare. Proximally
of the bells the cleaning bristles are smooth. The end-comb (fig. 14) has about 90—150 teeth,
ail of about the same type, i. e. fairly square distally and with a series of bristle-like secondary
teeth running across the middle. Dorsally between the end comb and the cleaning bristles
there is an unpaired and rather small and smooth chitinous peg (fig. 14).
Furca: — This is of the same type as that shown in pl. II, fig. 12, Th. SCOTT, 1912 b.
The number of claws varies somewhat; the specimens from S/S „Michael Sars“ had
eleven to thirteen (the type specimen eleven); the specimen from M/S „A rmauer Hansen“
had ten; of the specimens from S/S „An ta ret i c“ one had eleven + twelve, the other
not less than fourteen + fifteen claws. Behind the claws the furca is bare.
U p p e r 1 i p and median eye: — These seem to correspond exaetly to these organs
in G. Agassizi. The lateral eyes are very greatly reduced, and certainly do not funetion
as organs of sight.
The number of embryos in the specimens from S/S „Michael S a r s“ and M/S
„A rmauer Hansen“ was about thirty to fifty; in the specimens from S/S ,,A n t a r c t i c“
there were 57—85. Several of the females with their embryos far developed had rather large
eggs in the ovaries, about twenty to twenty-five in each ovary.
Male: —
Shell: — Length 12—13 mm.; length : height : breadth about 12,5 : 10 : 9, i. e. the
height is comparatively a little less than in the females. The posterior aperture of the shell
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