114 
THE VOYAGE OF H.M.S. CHALLENGER. 
The Lepidonotus stellatus of Dr. Baird, ^ from the Australian seas, is apparently 
similar. The scales have a V-shaped arrangement of tubercles, the open end of the V 
being posterior. The lucid dots alluded to by Dr. Baird are probably hypodermic, and 
by transmitted light are arranged very prettily in groups. The dorsal bristles seem to 
be better developed in Dr. Baird’s species, being larger and more numerous, but the 
ventral approach those of the present form closely, though the tips are not identical. No 
stripes appear, moreover, externally, only the V-shaped mark of the scales. Another 
allied Annelid, lately collected by H.M.S. “Alert” in the same regions, shows two parallel 
longitudinal (to the axis of the body) ridges toward the outer border of the scale. 
The division of the Polynoidse to which these various forms belong seems to be 
confined to the Australian seas. 
Polynoe capensis, n. sp. (PL IV. fig. 4 ; PL XV. fig. 1 ; PL XIX. fig. 4 ; PL IXa. 
figs. 4, 5). 
Habitat. — Two examples were dredged at Station 141 (near the Cape of Good Hope), 
December 17, 1873 ; lat. 34° 41' S., long. 18° 36' E. ; depth, 98 fathoms; bottom tem- 
perature 49° '5, surface temperature 66° ‘5 ; green sand. 
Length about 25 mm., and breadth nearly 9 mm. 
The body is rather elongated and narrow, and when the scales are present is tinted 
a dull blackish -grey. On removal of the latter organs the centre of the back 
throughout the greater part of the body is pale, but a little granular pigment occurs 
on the dorsum of each foot. Posteriorly also the last six or seven segments show in 
each a broad bar of pigment in front and a narrow one behind, rather regularly disposed. 
A little pigment is present on the same region ventrally, and on the bases of the feet 
generally. 
The head (PL IV. fig. 4) is somewhat elongated from before backward, and, as in 
Lepidonotus, there are no prominent anterior peaks, the frontal edges running into the 
bases of the antennae, which are conspicuous on the sides of the tentacle. Two rather 
small eyes are situated at the posterior border, and two larger in front of the lateral 
prominences. The pairs are thus wide apart, and somewhat like those of Polynoe scolo- 
pendrina. The tentacle is absent in both, but a loose organ probably represents it. This 
is somewhat fusiform, narrowed a little at the base, and tapered at the pale tip. It is 
blackish-grey in colour. The antennae are also blackish-grey, and tapered from base to 
apex. The tentacular and dorsal cirri have a tendency to assume a fusiform condition. 
The basal region of each is dark greyish, the column blackish-grey, and the slightly 
tapered tip pale. All are rather short and smooth. The ventral cirri are long and large, 
1 Journ. Linn. Soc. Land., vol. viii. p. 185. 
