short smooth portion with, in many, a slight though distinct, streak, best marked in the
shorter bristles, in which it forms a groove at the extremity. The external bristles (those
next the ventral division) form a contrast to the inner from their sharp tapering tips and
slight curvature. In the older specimens these bristles are often densely coated with
parasitic growths, such as algse and infusorians, besides mud. The ventral branch has a
series of rather elongate slender bristles with tapering tips, which, as usual, diminish in
length from above downward. The tips superiorly are attenuate, and one or two show
ho secondary process, but this soon appears, again to disappear, in the shorter inferior
forms. One of the attenuate superior bristles with a bifid tip is shown in Plate XXXIX,
fig. 18. The spinous rows are rather prominent. A shorter bristle again, with a slightly
abraded tip, is given in Plate XXXIX, fig. 19. Inferiorly the bristles have slender,
short, spinous extremities with a minute secondary process, and, at the ventral edge of
the series, the tips are simple. The nearly cylindrical papilla above the ventral spine is
well marked; and the ventral cirrus reaches beyond the base of the bristles, and has
somewhat slender clavate papilke.
Comparatively little change ensues in the bristles of the terminal feet. The dorsal
are more slender and proportionally longer, so that they extend almost to the. tip of the
longest of the ventral division. The ventral division has the same type of bristles as
in front, except that they are more slender. The elongated forms usually found in this
region were not observed, but the specimens may have been recently injured. The
papilla above the ventral spine continues to the last foot.
The dorsal cirri are of two types, viz. those of the usual kind^with just a trace of a
dilatation below the elongated filiform tip, and densely coated with cilia, which are long
except at either end of the series; and secondly, those with a greatly enlarged distal half,
so that the organ resembles a tennis-racket with the filiform tip appended to it, and
coated with cilia as in the first form. This condition of the cirri was first noticed by
Ray Lankester in specimens from Herm, for Grube’s original ones had only the slender
cirri. No connection between the sexual or other condition of the specimens and this
state of the cirri has yet been observed. In one instance .these enlarged cirri were found
in the tubes of Chaetopterus, and were forwarded as parasites.
Reproduction.—A specimen of good size from Herm carried ova at the end of July
and beginning of August.
Habits.—Ray Lankester, who placed it as a new species under the genus Antinoe,
thought it fed on Terebella nebulosa, and I found some procured in Herm had fed on
Eunice and other forms. I t would not always seem to be an inhabitant of tubes of other
annelids, but occurs in a free condition under tidal stones. De Quatrefages gave this
form a position near Harmotho'e imbricata, but added nothing to Grube’s remarks.
G-iard (1886) includes it under the genus Eva/rne on account of the form of the head,
and the presence of chitinous protuberances on, as well as on account of the structure of,
the elytra. Yet the proboscis, the margin of the elytra, and the cirri present certain
characters which are almost sufficient to give generic distinction.
De Saint Joseph (1888) seems to doubt my diagnosis in regard to Ray Lankester’s
Antinoe nobilis, but it rests on a careful examination of specimens kindly sent me by
Lankester himself, and a survey of the same collecting grounds on the Channel Islands.
There is no doubt on the subject.
Genus XIV.—Evarke, Malmgren, 1865.
Body rather small, ovate-oblong, attenuate posteriorly. Lateral tentacles fixed
under the median, head deeply incised in front, and with prominent lateral peaks.
Eyes four, generally large, the anterior pair on the projecting lateral region;
the posterior in front of the nuchal collar and widely separated. Palpi densely
covered with minute papillae. Scales, fifteen pairs, spinulose, ciliated or smooth
at the edge. Dorsal bristles shorter than the ventral, and with wide rows of spines;
ventral bristles very long, with minutely bifid tips. Segmental papillae well marked,
but not long.
1. E varne impar, Johnston, 1839. Plate XXVI, fig. 5.
Specific Characters.—Head wider than long, with prominent peaks anteriorly. Eyes
large; posterior pair in front of nuchal collar, widely apart; anterior pair on projecting
lateral region. Median tentacle strong and moderately long, densely ciliated, madder-
brown, with a slightly dilated whitish region, marked off by bars, below the filiform tip.
Lateral tentacles inferior, subulate^and tapering, with short clavate cilia. Tentacular
cirri similar to, but more slender than, the median tentacle. Palpi of average length,
with tapered extremities, and densely covered with minute clavate papillm. Body somewhat
thin and flattened, broadest at the anterior third, thence tapering to the tail.
Segments thirty-eight to forty, greenish-brown on the dorsum, darkest in front, the pigment
forming somewhat regular bars and touches. Arch of pigment in the cirrigerous segments
terminates laterally in two small touches of dark olive, besides other touches at
base of cirri. Yentral surface pale or brownish. Segmental eminence and papilla well
developed, commencing on the sixth bristled segment. Two long caudal styles. Scales,
fifteen pairs, mottled with brownish pigment, often with a yellowish speck in the centre.
First pair subcircular, rest reniform and then ovoid; external margin densely ciliated;
surface mostly covered with small horny papillas, with larger ones ^towards the outer
and posterior borders, while along the latter are a few large pyriform or globular papillae.
Dorsal bristles translucent, rather acutely pointed, with wide rows of spines which cross
the shaft at right angles; ventral bristles with elongate tapering spinous regions and
minutely bifid tips; the latter diminish in length inferiorly, and some at the ventral edge
have simple tips. Dorsal cirri like tentacular cirri; ventral cirri subulate, the slender
tips reaching the ventral bristles, and with numerous short clavate cilia.
S ynonyms.
1839. Polynoe impar, Johnston. Ann. Nat. Hist., ii, 436, pi. xxii, f. 3—9.
1840. Lepidonote impar, Oersted. Annul. Dan. Consp., 13.
,, „ ' „ Grube. Fam. Annel., 36.