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very probably belonging to A. norvegica. — On account, however, of the difficulty in
defining with certainty the species of larvae belonging to this genus, it did not seem convenient
to me to include this locality among the new habitats given below, especially as this species
is not previously know from this region. The specimen had a shell 1,72 mm. long.
Habitat: — West c o a s t of Sweden: Bohuslän: E. N. E. of .Stora Sneholmen.
Koster; 18. V. 1897; depth down to 160 m.; clay-.one juvenis; (coli. J. G. VXDEHSSOX); K. .AI. S.
184. N. E. of this island; 26. V. 1897; depth 160 m.; clay: one juvenis; (coli. J. G. ANDERSSON);
R. M. S. 185. Väderöarna; depth 70—100 m.; coral bottom: one juvenis; (coll. v. GoËs);
R. M. S. 186. Gullmar Fjord, no definite locality, probably at Skår; depth 90—110 m.; clay:
5 mature females and 4 juvenes; (coll. S. Lot én); R. AI. S. 187. Gullmar Fjord, Fiskebäckskil;
16. Vil. 1894; clay: 3 mature females; (coll. J. G. ANDERSSON); R. AI. S. 188.
On the label of the two specimens that I got from G. O. Sars, no locality was to be fourni;
the specimens in question were, however, certainly from the coast of Norway.
Distribution: — Christiania Fjord, Holmestrand, type-locality, depth 90—110 m.
Asterope abyssicola G. 0. Sars.
Asterope abyssicola, G. O. SARS, 1870, p. 170.
,, ,, ,, ,, ,, 1886, p. /4.
„ „ G. S. Brady and A. AI. Norman, 1896. p. 636. pl. LII. figs. 18, 19.
„ ,, G. W. AIÜLLER, 1912, p. 45.
Description: — F e m a 1 e :
Shell: — Length 1,63 mm.; lengtli : height about 1,92 : 1; length : breadth about
2,17 : 1. Seen from the side (fig. 1) it is elongated, with its greatest height at about
the middle and the anterior part somewhat, though onlv very slightly, larger than the posterior
part. The dorsal and ventral margins are almost parallel to each other and are rather weakly,
uniformly and almost equally curved; anteriorly they are somewhat flattened; they pass evenlv
into the anterior and posterior margins. The anterior and posterior margins are evenly and
boldly rounded, the former being almost semi-circular, the latter somewhat more weakly curved
ventrally than it is dorsally. Seen f r o m bene a t h (fig. 2) it has its greatest breadth
at about the middle and grows narrow rather rapidly towards the ends, somewhat more rapidly
forward. The anterior end is rounded, the posterior end somewhat heart-shaped; the side
contours are even. Seen from inside: Aledial bristles: (On account of the condition of
the specimen investigated the information given about these bristles is perhaps not quite so
certain as might be desired.) On the rostrum there is a rather distinct, relatively sparse row
of moderately long bristles which runs about parallel to and somewhat inside the anterior
margin of the shell. Inside this row of bristles there is only a rather small number of bristles
scattered on the rostrum, some moderately long and some very short. On the anterior wall
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