downward, and with papilhe like those of 8. zetlandica. The bristles are similar, though
in the smaller specimen finer. The ventral lobe is conical, with long papillas,—as
in 8. zetlandica. The upper ventral bristles have about six rows of spines at the
dilated distal region of the shaft, and the terminal process has three or four segments.
The tips are slender and bifid, the secondary process having no appreciable angle to the
axis. The next lower forms are stouter, with a beak-like extremity. The inferior
bristles are slender, with about two rows of spines at the end of the shaft, and a
tapering terminal appendage of two or four divisions, bifid at the tip. Apparently three
ciliated pads (ctenidia) occur on the dorsum. The ventral cirrus is slender, and rather
shorter than the fleshy part of the foot.
S ynonym.
1876. Sthenelais atlantica, McIntosh. Trans. Zool. Soc., vol. ix, p. 405, pi. lxxii, f. 16, 17.
Habitat.—From the entrance of the British Channel to the Atlantic deeps in
305 fathoms, Station 2, ‘ Porcupine,’ 1870. The ground seemed to have been sandy.
Head (Plate XXIX, fig. 2) somewhat ovoid in outline, a small subulate tentacle with
a terminal joint in front, and a pair of eyes situated close together on each side near
the base (ceratophore) of the organ. The palpi are very long, smooth, and tapering,
and the tips of the tentacular cirri show a terminal joint as in the median tentacle.
Body.—Slightly narrowed in front, but as the feet project laterally and forward, the
outline anteriorly is really broad and gently curved laterally. Only about 10 mm. of
the body remain, and the specimen appears to be small.
Scales (Plate XLI, fig. 27) somewhat thin, rounded or ovoid in front, reniform
throughout the rest of the fragment, covered with sparsely distributed but distinct
clavate papillae, and having a fringe of short clavate cilia, which are only absent from
a portion of the inner and adjoining anterior margin. Four of the longest, indeed, occur
on the outer lobe of the anterior margin near the hilus. They are longest anteriorly.
The cilia (Plate XLI, fig. 27) are decidedly longer and more slender, as well as more
numerous than in 8. zetlandica, and palpocils occur frequently on the extremity.
Feet (Plate XXX, fig. 14) resemble those of 8. zetlandica, having a projecting
dorsal lobe bevelled from above downward, and the papilhe have similar dimensions.
The bristles are somewhat finer, ‘and the serrations or spinous rows closer, but the
specimen is smaller. The ventral lobe is conical, with similar long papillae, the secondary
processes or warts at the tip of these being distinct. The superior ventral bristles
(Plate XLI, fig. 28) have about six rows of spines at the dilated distal regions of the
shaft; and the terminal appendage has three or four segments, the basal, in the case of
those possessing four, being about as long as the three distal. The tips are slender and
bifid, the secondary process having no appreciable angle to the axis, so that it lies
close to the hook. The next lower series are stouter, with about four distinct spinous
rows on the distal end of the shaft, and a terminal appendage of one or two segments,
the tip resembling the beak of an eagle. The inferior are slender, with about two
rows of spines at the dilated end of the shaft, a terminal appendage of two or four
divisions, and a tapering, delicately bifid tip. The shafts of all the ventral bristles have
a backward curve distally. A branchial process, and apparently three ciliated pads
(ctenidia) occur on the dorsum, but the specimen is not in a condition to speak decisively.
The ventral cirrus is slender and rather short, the tip being shorter than the fleshy
part of the foot. The preparations would seem to indicate a joint at the tip. In a
former note it was mentioned that some minute warts appear along the ventral margin of
the foot, but the preparations are now doubtful on this point.
The species comes near 8. zetlandica, yet the points indicated seem to warrant
separation. Both species approach Clapar&de’s 8. ctenolepis from the Mediterranean,1
but yet are sufficiently distinct.
4. Sthenelais limicola, Ehlers, 1864.
Specific Characters.—Head ovoid with the long diameter transverse, and median
space bounded by a brownish crescentic line on each side. Anterior and larger pair of
eyes often scarcely visible from the dorsum, being situated under the lateral processes
at the base (ceratophore) of the median tentacle, and looking forward. Posterior pair of
considerable size, a little behind the base of the median tentacle. Both occasionally show
a pale speck in the centre, as if from a lens. Base of the median tentacle (ceratophore)
somewhat conical (in spirit); tentacle of moderate length, the filiform tip being slightly
enlarged, and with a trace of an articulation. On each side of the base is a flattened
spathulate process ^ctenidium). First foot fused ventrally with the base of the long,
tapering, smooth palpus, with a small sheath-like process (ctenidium) at its base
internally; then come a filiform ventral tentacular cirrus and a much larger dorsal
cirrus, and internally to the ventral cirrus a broad scimitar-shaped process (ctenidium).
Above and behind the latter is the small terminal region of the lateral tentacle.
Proboscis trumpet-shaped in extension, with eleven conical papillm dorsally and ventrally.
The teeth appear to bite as in 8. boa. Body elongate, more than two inches long, and
having about 128 segments. I t tapers to a slender tail with two styles. Segmental
eminence opposite each foot; no papilla. Scales smooth, translucent, brownish, covering
the back. First pair rounded, each with short clavate cilia along its outer border, and
a few larger digit-like forms at its anterior and outer margin. The others are more or
less reniform, the outer margin thin, folded, and having irregular processes—simple, bifid,
or irregularly divided. In the posterior scales the outer margin is bilobed, and in those
near the caudal region a belt of large round vesicles occurs in the hypoderm in front
of the scar: a touch of brown is present in some scales. Feet with branchial process,
and three ciliated pads (ctenidia) dorsally. The dorsal lobe is prominent, somewhat
clavate in outline, and has anteriorly four or five long papilhe (stylodes) from its upper
end, the spine projecting inferiorly. The bristles are long, slender, tapering, and finely
spinous. The ventral lobe is shorter and broader, somewhat conical at the tip, and
bears one leaf-like lobe above the spine, and a smaller lobule at the ventral edge, a long
papilla (stylode P) likewise being attached to the former region. Upper bristles like
those in 8. boa, with simple spinous tips, only more slender. The next have slender
shafts with long tapering tips of twelve or more segments, and minutely bifid. A
i f Ann. Ch€t. Naples/ 88.