REPORT ON THE ANNELIDA. 
77 
dorsal bristles especially being few and short. They consist of a series of short pale 
yellow bristles, which show only a very hiint trace of the spinous rows (PI. VIIa. fig. 12). 
The points in a lateral view are somewhat blunt, and there is a characteristic curvature 
in the same position. When viewed antero-posteriorly, however, they are nearly 
sjrmmetrical in outline, narrowing as they emerge from the skin, dilating, and again 
diminishing toward the tip. 
The ventral bristles, again, have simple, broad hooked tips (PI. VIIa. fig. 13), and 
somewhat short spinous rows beneath. In simplicity they resemble those of Eunoa, 
Nychia, and Achloe, and, perhaps, though the curvature at the tip differs very consider- 
ably, they are nearest to the latter. They are much longer proportionally than the dorsal 
bristles. 
The scales are nineteen pairs, overlap considerably in front, but not in the central 
or posterior region of the body. They are perfectly smooth, somewhat thin, translucent 
and milky, and have the scar for attachment very eccentric. The latter is situated 
toward the outer and anterior margin in those in front, while in the posterior the scar 
more nearly approaches the middle of an antero -posterior line drawn through the scale. 
They show numerous branching nerves. 
The species is remarkably free from parasites on the bristles or other parts. 
The alimentary canal in those examined was quite empty. In the debris from the 
anus of one example were many granular cells, probably from the surface of the canal. 
The extruded proboscis is short, and has the usual nine papillae dorsally and ventrally. 
The maxillse are dark brown, and as usual lock alternately. In section the muscular 
walls of the body seem to be largely developed, while the proboscis is proportionally 
small, and in the anterior third it is surrounded by a muscular ring. The nerve-cords 
are comparatively thick, and have an area of somewhat lax hypodermic tissue in the 
central line beneath them, giving rise in some views to a perforated appearance. The 
ventral area is narrow. 
Dr. Baird’s Hermadion magalhcensi resembles this form in the length of the body 
and smoothness of the scales, but differs in the structure of the bristles, the dorsal being 
comparatively smooth and the ventral having a bifid tip. 
Dasylepis, Malmgren. 
Dasylepis equitis, n. sp. (PI. XXXII. fig. 7 ; PI. XXXIXa. figs. 5, 6). 
Habitat. — Dredged by H.M.S. “ Knight Errant ” in the Fseroe Channel at Station 
8, August 17, 1880, in 540 fathoms ; bottom temperature 29^’5, surface temperature 
56°‘5; ooze. 
The specimen consists of a fragment of the posterior end about 9 mm. in length 
and 8 mm. in breadth. It has three pairs of scales. 
