14 Prof. M‘Intosh’s Notes from the 
(Southern). The cephalic region tapers to a slender point, 
which does not show a clavate tip. The extruded proboscis 
is furnished with thirteen slender papille (Southern). 
Nuchal organ conspicuous on each side in the front of the 
first bristle-bundle. The body is fully 12 mm. long, tapered 
at both ends, but nearly of uniform diameter throughout the 
rest of its extent. It is rounded dorsally, deeply grooved 
ventrally from the snout to the anal funnel. Setigerous 
segments thirty-three, each with three rings, and each ring 
biannulate (Southern). The dorsal cirri are filiform and 
fairly long. An eye-speck is situated behind each foot, from 
the fourth to the nineteenth, and each consists of small 
spheres of pigment or a single mass (Southern). In lateral 
view the body abruptly narrows to the anual funnel, which is 
a flattened tube with a dorsal opening posteriorly. The 
margin of the funnel is papillose posteriorly, Southern 
describing the opening as projecting in four lobes, each 
bearing a fusiform papilla. A long slender cirrus, nearly 
twice as long as the anal funnel, arises from the ventral base 
in front of the funnel. 
The feet occupy the upper and outer border of the ridges 
made by the ventral longitudinal muscles. The setigerous 
lobe is rounded, and bears superiorly the long subulate 
cirrus in which at least one blood-vessel is present, then . 
a tuft of simple capillary bristles ; ventrally a similar tuft 
of bristles and a small, somewhat clavate, ventral cirrus 
(Southern). 
In the Scalibregmidee Asclerocheilus mtermedius, De St. 
Joseph, was dredged by Southern in Blacksod Bay and 
other places on the West Coast of Ireland. It is a small 
species, measuring about 2 or 3 mm., the anterior end 
being distinguished by two rounded processes with a de- 
pression between. ‘The body is somewhat fusiform in outline, 
slightly tapered anteriorly and abruptly so posteriorly. 
Body apparently has about twenty segments. So far as 
seen, no ventral cirrus is present and no eyes*. ‘I he ventral 
hooks of the second segment have a marked curve backward 
(sickle-like) at the tip, and terminate in sharp, not attenuate, 
points. The upper bristles of the second segment are capil- 
lary, with finely tapered, long points. The posterior bristles 
are more elongate. Apparently tranverse rows of opaque 
glands occur posteriorly in each segment. 
* The eyes are probably deep-seated, as in S. minutus. Vide the 
elaborate research by A. and L. Dehorne, Arch. Zool, Expér. t, hii. 
pp. 61-187, pls. iv.—vii. (1918). 
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