REPORT ON THE ANNELIDA. 
89 
The spines as usual are much developed in the first scale. Amongst the long conical 
thorns are a few slender cilia, which sometimes extend beyond the tips of the former. 
There are also some globular or blunt processes, which probably represent developing 
spines after injury. 
The dorsal division of the foot has a series of very long, stiff, nearly straight and 
acutely pointed bristles with short though boldly marked spinous rows (PI. XIa. fig. 4, 
one of the longer and more slender forms). They are tapered almost from the base, so 
that a very acute tip results. The rows of spines are also often visible on both sides. 
The smooth portion at the tip is very short, sharp, and slightly bent when seen from 
the front as in the figure. In the less numerous shorter forms (PI. XIa. fig. 5, a lateral 
view) the tip is broader. The transverse lines are distinctly marked. These bristles 
are of a brownish tint. 
The ventral division bears bristles which are much less conspicuous, both in thickness 
and length, than the dorsal. The superior have long serrated tips, the inferior short, 
and though in neither are the rows furnished with long spines, they have the 
peculiarly defined serratures observed in the dorsal, and which are best seen antero- 
posteriorly. In lateral views (PI. XIa. fig. 6) the spinous rows are less distinct. The 
nature of the bifid tip is peculiar. Below the terminal hook is a short and very acute spine 
directed upward, and the smooth portion beneath is sometimes convex, as in the figure. 
The cuticle is dense, especially in the ventral median line. The nerve-cords are of 
average size, and the area is moderate. 
This species is easily distinguished from the known forms by the shape of the body 
and the length and structure of the dorsal bristles. 
Lagisca yokohamiensis, n. sp. (PI. XIa. figs. 12, 13). 
Habitat . — Dredged off Yokohama, Japan, May 6, 1875, in 5 to 50 fathoms. 
The single specimen unfortunately had been dried, so that only an imperfect 
description can be given. 
The scales and dorsum are mottled all over with dark brownish pigment, and the 
head is especially dark, being in the specimen almost purplish-black. The eyes seem to 
have an arrangement similar to the ordinary examples of Lagisca. The tentacles, tenta- 
cular and dorsal cirri have numerous and somewhat long cilia, with a slightly bulbous tip. 
The palpi seem to be comparatively smooth, only a few short papillse being visible here 
and there in the preparation. The scales are studded all over with small spines, and 
the posterior and outer borders have numerous and rather long cilia. 
Both dorsal and ventral bristles are comparatively long. They are of a pale straw- 
colour. The dorsal division of the foot bears a series of bristles (PI. XIa. fig. 12) 
(ZOOL. CHALL. EXP. PART XXXIV. 1885.) LI 12 
