384 W. C. M‘SINTOSH ON BRITISH ANNELIDA. 
and delicate spinous region with a bifid and scarcely curved tip, careful examination 
being necessary to detect the slender secondary: process (Pl. LXIX. fig. 5). The tips 
become stouter though shorter inferiorly, and the bifid extremity more apparent, the 
secondary process proceeding halfway upward in the stronger forms. This process 
becomes a mere speck and finally disappears in the lowest bristles. One of the 
stoutest forms (three or four of which spring from the region of the spine) is drawn 
in Pl. LXIX. fig. 6. The spinous region has its upper third even narrower than that 
immediately behind the hook at the tip—a peculiarity not often seen. 
Harmornod HAutaitt', n.s. Dredged in the Minch by Dr. Gwyn Jeffreys. A frag- 
ment of the posterior end of the worm was obtained; and the feet are the only parts 
that can be described at present. It is a species of some size. 
The dorsal branch of the foot bears a series of rather slender slightly curved bristles 
with conspicuous rows of spines (Pl. LXIX. fig. 7). Such bristles, when viewed 
antero-posteriorly, present a much narrower aspect than when seen in profile. The 
arrangement of the spinous rows is alternate, as in the ventral bristles. The superior 
ventral bristles have elongate spinous portions and slender tips (Pl. LXIX. fig. 8). At 
first the bifid tips are almost straight or very slightly curved, but they soon become 
more characteristic (fig. 9). The alternate rows of prominent spines are conspicuous in 
both figures. The facies of the tip is even more characteristic in the inferior series 
(Pl. LXIX. fig. 10). In the superior group the secondary process is nearly straight; 
but in the others it bends outward at the tip. 
The inferior cirrus is slightly enlarged at the base, slender and filiform superiorly, 
and furnished with rather long papille, sparsely distributed. 
The species is at once distinguished from Polynoé floccosa by the structure of the 
bristles, both dorsal and ventral, and by the presence of rather long papille on the 
ventral cirrus. 
HARMOTHOE MARPHYS#,n.s. From the galleries of Marphysa sanguinea in Guernsey, 
and chinks of the rocks, Polperro (Brit. Mus.). 
Length about three quarters of an inch. _Bristle-bearing segments thirty-one ; but the 
posterior region is in process of reproduction. Of a pale brownish hue, inclining to buff, 
with a red patch on the head and a purplish one (due to the proboscis) behind; a faint 
median line from end to end; cirri pale brownish, pellucid, the two caudal styles being 
darkest. The under surface is pinkish, with a broad streak of pale carmine in the 
centre. 
The head is rather elongated from before backward, and rounded in front. Eyes 
small; the anterior pair widest apart and situated in front of the middle line at the 
edge of the red patch on the head. The posterior pair lie in front of the posterior 
‘ Named after Dr. Gwyn Jeffrey’s yacht ‘ Osprey.’ 
