Several specimens occur along with JSvame Johnstoni in Norwegian collections
(1870) by Dr. Merle Norman. Whether any relationship of an epitocous kind exists
with this or other forms is unknown.
Mobius records it under the name of Polynoe 'cirrata on the authority of Th£el, who
gives P. cirrata as a synonym of the species, but the latter has since seen that there
are no grounds for this arrangement.
2. Antinoe finmabohica, Matmgren, 1867; an. var. A. Sarsi.
Specific Characters.—Head as in Antinoe Sarsi, and the body has a similar outline,
with thirty segments in the largest example (less than ^ inch in spirit). Scales with
short and sparse cilia on the outer and posterior borders, and the minute spinous
papillse are chiefly distributed on the anterior half of the scale as well as externally and
internally. Feet similar to the foregoing in general structure, but the dorsal bristles
have slightly narrower intervals between the rows than in Antinoe Sarsi, and they are
longer, less curved, and more acutely tapered at the tip. The ventral bristles are
decidedly stouter; the tips, instead of being capillary, have a long delicate portion of
appreciable breadth, with a slightly curved point.
S ynonyms.
1865. Antinoe finmarchica, Malmgren. Ann. Poly., p. 13.
1876. „ „ McIntosh. Trans. Z. S., is, pp. 387 and 400, pi. lxxii, f. 1, 2. -
Habitat.—Dredged.off the west coast of Ireland (Donegal) during the ‘Porcupine’
Expedition of 1869 in 20 to 420 fathoms ; and also by the Expedition of the Royal
Irish Academy in 1886 at 93 fathoms.
Head differs from that of A. Sarsi in that the eyes are proportionally larger, and
the anterior pair are more lateral in position. The other organs present no feature of
moment in the preparations.
Body of similar outline to the foregoing species, and of thirty segments, but, as the
largest specimen is under ^ inch in spirit, it may be immature.
Scales (Plate XXXIII, fig. 8) show a definite structure in contrast with A. Sarsi,
but changes may occur in course of growth. They have a similar outline, but the cilia
on the outer and posterior borders are short and sparse, and the minute spinous papillae
are chiefly distributed in the anterior region in front of and on each side of the scar for
the pedicle. The rest of the area posteriorly seems to have less distinct papillae, but
towards the posterior margin the cilia appear on the surface. ' Some of the papillae have
the summits curiously truncated. Small Norwegian examples of A. Sarsi show the
same arrangement of the horny papillae, so that the question is still open.
Feet.—The general structure of the fleshy part of the foot (Plate XXX, fig. 13) is
the same as in the previous species. The dorsal bristles are long, translucent, sharply
tapered from the commencement of the spinous portion to the tip, and with slightly
narrower intervals between the spinous rows than in the former (Plate XL, fig. 9), the
latter figure representing one of the straighter forms next the ventral, while an outer
curved one is given in Plate XL, fig. 10. In contrast with those of A. Sarsi they are
longer, less curved, more acutely tapered at the tip, and with more closely arranged
spinous rows, and this is the case whether we compare them with adult or with young of
the same size. The ventral bristles, again, are decidedly stouter than in A. Sarsi, and
superiorly, instead of those with capillary tips, are bristles with a very long and delicate
portion of appreciable breadth, distinctly spinous, and ending in a slightly curved point.
The spinous rows continue nearly to the latter. The tips gradually (Plate XL, fig. 11)
diminish in length toward the inferior edge, and the spinous rows are closer. Some,
e. g. those from the south-west coast of Ireland, show a tendency to have long spines at
the tip as in Antinoe mollis (Plate XL, fig. 13), but the feature is indistinct. Young
specimens of A. Sa/rsi of the same size show the fine hair-like tips of the adult.
The dorsal cirri have somewhat fewer cilia than in Antinoe Sa/rsi.
This form seems to frequent deep water. I t is probable that further observations
may show that it is only a variety of the foregoing, the points of difference between
them, and it may be other forms, being due either to epigamy or other sexual variation.
In the meantime the distinctive characters will ensure its ready identification.
3. Antinoë mollis, G. O. Sars, 1871.
Specific Characters^=Head somewhat broader than long (in spirit), with blunt
anterior peaks. Eyes larger than in A. finmarchica, the anterior pair being situated
laterally at the base of the peaks, and thus are not visible dorsally. The posterior pair
are separated by a wide interval from thé anterior pair. The palpi show minute papillge
under a high power. Lateral tentacles with short clavate cilia. First pair of scales
rounded, rest ovoid; outer and posterior borders with slender clavate cilia, which are
longest externally; entire surface closely covered with short, blunt, and rather soft
spines. Dorsal bristles rather large, long, slightly curved, less acutely tapered than in
Antinoe finmarchica, and with close rows of spines. Ventral cirri with short clavate cilia.
S yno nyms.
1871. Lsenilla mollis, G-. O. Sars. Vidensk.-selsk. Forhandl., 1871, p. 406.
1873. , ,,. „ idem. Bidrag Christ. Fauna, p. 7, pi. xiv.
1876. Antinoë mollis, McIntosh. Trans. Zool. Soc., ix, p. 400, pi. lxxii, f. 3, 4.
1879. Lsenilla mollis, Tauber. Ann. Danic., 81.
1883. Harmothoe mollis, Levinsen. Nord. Annul., 191.
Habitat.—Dredged on a bottom of muddy sand at a depth of 20 fathoms off Donegal,
and 370 and 420 fathoms at various points of the Irish coast in the ‘ Porcupine ’ Expedition
of 1869. Dredged at 257 fathoms in the Expedition of 1870, in the Atlantic. A
similar form occurs in Norwegian waters, and Verrill includes it in his American list.
Head (Plate XXVIII, fig. 14), in spirit, somewhat broader than long, with blunt
anterior peaks. The eyes are larger than in the previous form, the anterior pair being
situated at the base of the peaks laterally, and thus are not visible from the dorsum,
as well as separated by a wide interval from the posterior pair, which are smaller,