extend along the outer border, and also form a group in the neighbourhood—within the
anterior edge. The anterior border of the scale is smooth, with the exception of an
isolated group of one to five or more long cilia some distance from the outer edge. The
entire surface of the scale is densely studded with minute spines, smallest in front and
increasing in size posteriorly. The developing scales are of various degrees of smoothness,
the youngest being quite smooth.
Both dorsal and ventral divisions of the foot bear a long pointed process for the
spine. The dorsal division has characteristic bristles (right of Fig. 22), which somewhat
approach those of Harmotho'e haliaeti, though quite distinct. They are of considerable
length, slightly curved, and not much tapered at the tip, which, indeed, ends in a short
blunt cone, and in some shows a slight fold or differentiation on the spinous side. The
short bare cone at the tip is much broader than that of H. haliaeti, and has a different
character. The spinous rows so nearly approach the tips that they in some almost
reach as far as the point of the bristle, and are as close as in the species just
mentioned. The ventral bristles (left of Fig. 22) have somewhat slender shafts, spinous
tips of the average length, and a long and rather broad terminal region with a well-
marked hook. The ventral line of the smooth tip is slightly convex.
The dorsal cirri are of considerable length—with a filiform tip. They are densely
covered with long cilia having probe-pointed tips. The ventral cirri have only a few
scattered and very short clavate cilia.
This fine species appears to be confined to deep water.
Genus XI.—L agisoa, Malmgren, 1865.
Body rather narrow, attenuate posteriorly. Cephalic lobe produced into lateral
peaks. Lateral tentacles attached below the median. Byes four; two lateral just in
front of the middle line, two in front of the nuchal border. Scales fifteen, covering the
dorsum—except the last few. Bristles of the dorsal lobe with acute tips and finely
serrated. Bristles of the ventral lobe simple superiorly and inferiorly, rest bidentate,.
and all with long spinous rows. Papillge of proboscis f. Two slender caeca go forward
into the peripharyngeal space. Segmental (nephridial) papilla commences as a minute-
process on the fifth foot, and extends nearly to the last foot. I t is much smaller than in,
Harmotho'e.
1. Lagisoa floccosa, Savigny, 1820. Plate XXVI, fig. 2.
Specific Characters.—Body rather narrow throughout, slightly diminished anteriorly,,
and much more so posteriorly. Median and lateral tentacles, and the tentacular cirri
rather short, densely ciliated and with filiform tips; little or no enlargement below the
latter. Eyes large, posterior in front of the nuchal border; anterior lateral in position,,
and just in front of the middle line. First pair of scales rounded, the others reniform or
somewhat ovate, mottled greyish brown, often with a white spot in the centre, densely
covered with minute spines (visible under the microscope), and having posteriorly a series
of soft globular papillae arranged at intervals just within the margin. Cilia on the outer
border—very few and short. Dorsal bristles with acute tips and finely serrated ; ventral
bristles with the tips simple superiorly and inferiorly, rest bidentate. Alternate spinous
rows long, though the bristle-tip is proportionally short. Dorsal cirri with numerous
and rather short cilia. Ventral cirrus smooth.
S yno nyms.
1820. Polynoe floccosa, Savigny. Syst. Annel., pp. 22, 23, and 27.
1828. Eumolpe floccosa, Blainvillei Diet, de Sc. Nat., vers., 459.
1834. Polynoe floccosa, Aud. and M. Edw. Ann., 88.
1851. . „ Grube. Fam. d. Ann., 37 and 120.
1865. ,, ,, De Quatrefages. Anu., 286.
„ „ semisculptus, Johnst. Cat. Brit. Mus., p. 116, pi. v, f. 1——11, and pi. vi, f. 4—6.
1867. Lagisca propinqua, Malmgren. Ann. Polych., p. 9, Tab. i, fig. 3.
1870. Polynoe floccosa, Grube. Archiv f. Naturges., 287.
1873. Lagisca propinqua, Sars. Bid. Christ. Fauna, p. 3.
.1875. Polynoe floccosa, McIntosh. Invert, and Fish., St. A., p. 116.
„ ,, McIntosh. Trans. Z. S., ix, 380, pi. 68, f. 6, 8, 10.
1876. Lagisca propinqua, McIntosh. Trans. Z. S., 375, pi. 67, f. 12—14.
1879. ,, ,, Tauber. Ann. Danic, 81.
1880. „ „ / Langerhans. Die Wurmfauna Madeiras, Zeit. f. w. Zoöl., xxxiii, p. 274,
Taf. xiv, fig. 3c.
1882. Polynoe semisculpta, Hansen. Norweg. N. Atl. Exped., 26, pi. iii, f. 16—20.
1888. Harmotho'e propinqua, Levinsen. Nord. Annul., 192.
,, „ semisculptus, Ibid.
1886. Lagisca propinqua, Harvey-Gibson. Term. Liverpool, 148.
„ ,, „ Langerhans. Zeit. f. w. Zool., xl, 251, Taf. 15, f. 6.
,,. Polynoe floccosa, Harvey-Gibson. Verm. Liverp., 150.
1891.. ,, (Lagisca) propinqua, Hornell. Op. cit., p. 234, pi. 13, f. 1, 7,. 9.
1896. Lagisca propinqua, var. abyssorum, Houle. Camp. d. ‘ Caudan,’ 444.
1898. Harmotho'e semisculptus, Michaelsen. Grönland. Annel., Bib. Zool., Heft 20, Lfg. 4/p. 121.
Habitat.—Everywhere on the British shores from Shetland to the Channel Islands,
where it is the chief form between tide-marks. It also ranges from 600 fathoms to low-
water mark. I t extends to the G-ulf of St. Lawrence in Canada, as well as to Norway
and Sweden. It was procured likewise during the ‘ Vega ’ Expedition, and apparently
also is found in Greenland.
Length 1-J- inches, breadth about £ inch.
Head (Plate XXVII, fig. 14) with a median furrow anteriorly, which passes on
each side of the base of the tentacle to the peaks. The black eyes are comparatively
large, the posterior pair being dorsal in position and somewhat nearer each other than the
anterior pair. The latter are more or less lateral in position j ust in front of the prominent
median region. They are slightly larger than the posterior pair. Both pairs show in
some specimens a cuticular lens, like a central speck. The median tentacle is rather short,
with a long filiform tip and a slight swelling below the latter. I t has short clavate cilia.
The lateral tentacles are also short with similar cilia, and a long filiform tip. They have