Gatty Marine Laboratory, St. Andrews. 27 
between the dorsal and ventral divisions, is a fleshy process, 
adherent dorsally and pointing ventrally, separated by the 
two setigerous processes at the tori, and resembling those 
of Maldane cristagalli, Claparcde. Anal segment achetous ; 
anus near the ventral edge, whereas in Maldane it opeus 
towards the dorsum. ‘T'wo or three furrows are prolonged 
from the ventral to the dorsal surface—which De St. Joseph 
regarded as rudiments of segments. 
The cephalic region of aspecimen sent by Mr.Southern from 
Blacksod Bay resembles that in Nicomache, though somewhat 
longer and more projecting ventrally. A keel arises a little 
above the mouth and runs vertically to the dorsal edge. The 
surface is speckled with pigment as in Nicomache maculata. 
Each of the three following segments bears a spine below 
the dorsal tuft of bristles, four of these tufts characterising 
the anterior region. ‘Three long segments follow those with 
the spines, the third the longest, with two hook-rows, viz., 
an anterior and a posterior. ‘This segment is of softer con- 
sistence than those in front. The anal plate has an expanded 
smooth margin, which projects freely all round, except dorsally, 
and has the anus on its posterior surface a little within the 
ventral broad rim, and it shows a radiate arrangement of its 
margin. Apparently two narrow rings next it are achzetous, 
that in front of these has a row of hooks and a tuft of 
bristles of considerable length. The dorsal surface of the 
third, fourth, fifth, and sixth segments in front of the anal 
plate present a median conical free flap pointing backward, 
the third having a pedicled process like a Loxosoma attached 
to it. These eminences increase in prominence from the 
sixth backward. 
The bristles of the first region (four segments) are pale 
golden and brittle, having a straight shaft and a curved, 
finely-tapered tip with narrow wings. The spine in these 
segments 1s stout, golden, and pointed, the tip being slightly 
hooked. 
The bristles of the middle region are pale golden and of 
two kinds, a stronger series of about five with stout shafts 
and tapering winged tips, and a more numerous group of 
slender capillary bristles which extend considerably beyond 
the former. ‘The tips of the stout series in front of the tail 
are somewhat longer, but the capillary bristles are shorter, 
for they do not reach the extremities of the stout forms. 
The hooks in the smaller example are stout and rather 
short, with a base dilating up to the shoulder, which has a 
hump posteriorly ; then the neck is narrowed where it 1s 
