2 Prof. M‘Intosh’s Notes from the 
occurred in a tow-net at 411 fathoms off the West Coast 
of Ireland (Southern). Another addition is Haliplenes magna, 
Southern, from the same region, a pelagic form in which 
the head is rounded in front ; dorsal tentacles as long as the 
head is wide, and slightly larger than the ventral pair, which 
are placed far back, just in front of the mouth. At the 
base of the head dorsally is a wide collar, projecting laterally, 
and continued on the ventral side behind the mouth. No 
eyes. Body 3°6 mm. long; segments thirty-five; width 
across the feet 1mm. Colour in spirit pale yellowish brown. 
Foot with the pointed setigerous lobe projecting beyond the 
cirri and the tip of the spine is just visible. The dorsal 
cirrus is pear-shaped, the ventral bluntly conical. Bristles 
with slightly curved shafts and a prominent process at the 
tip. The terminal piece is long and slender, two to three 
times as long as the free portion of the shaft (Southern). 
A third pelagic type is Lopadorhynchus appendiculatus, 
Southern, procured off the West Coast of Ireland in the 
tow-net over 450 fathoms, The dorsal tentacles on the head 
are twice as long as the ventral, which are not seen from the 
dorsum, ‘The ventral tentacular cirri are somewhat longer 
than the dorsal, and on the basal piece of the ventral is a 
rudiment of the third pair. Body 13mm. long and 5mm. 
wide, narrowed posteriorly ; segments twenty-three, of which 
twenty-two are setigerous. Dorsally each segment is marked 
by a transverse ridge running along the middle, so as to 
have lozenge-shaped depressions in each intersegmental 
area, and ridges also occur ventrally. Feet anteriorly 
modified, but the typical foot occurs at the seventh, which 
has a pointed setigerous lobe with a spine and a rounded 
setigerous lamella with seventy-six compound bristles. The 
dorsal cirrus is conical and larger than the ventral, the tips 
of both being within that of the setigerous lobe. The 
ventral cirrus has a filiform process at the tip and the 
aperture of a multicellular gland near its base. Small 
granules of dark purple pigment occur on the inner sides of 
the cirri. 
The same form was described by Prof. Fauvel as 
L. uncinatus a few years later, and he emphasized the 
presence of the hooked bristles in the first two feet by his 
title to the species. 
Humenia hystricis, sp. n. 
Dredged on the Channel slope at Station 8, ‘ Porcupine’ 
Expedition, 1870, at a depth of 257-690 fathoms amidst a 
fauna chiefly northern. 
