592 Wisconsin Academy of Sciences, Arts, and Letters . 
base, but tapers rapidly to the slender posterior portion, the end 
of which is slightly incurved. The right ramus is produced pos¬ 
teriorly as an acute-angled point; on its inner edge there is a 
blunt, tooth-like projection, fitting into a corresponding depression 
on the inner edge of the left ramus, the external angle of which ends 
in a rather blunt lobe. This tooth correponds to the subsquare, 
shear-like blade on the rami of N. cerberus and other species. Both 
rami are strongly curved in the median plane, and the inner edges 
of the dorsal points are striated. The unci have a single promi¬ 
nent ventral tooth, followed dorsally by a slender diagonal rib 
and a second small tooth ending in a blunt knob. The manubria 
are very slender; from a point just below the anterior end a very 
long spur curves inwards, which, with a long and slender rod at¬ 
tached to the rami at its ventral end, serves to support the walls of 
the mastax when functioning as a pump. The oesophagus is com¬ 
paratively short; there is no very distinct separation between 
stomach and intestine, and the gastric glands are small and ovate. 
The ovary is somewhat elongate and irregular in outline. A small 
bladder is present. The foot glands are small and of the usual 
club-shape. 
The retrocerebral sac is pyriform and small, its length being 
but little more than that of the ganglion. No subcerebral glands 
are present in this species. The eye-spot is a rather small, lenticu¬ 
lar body at the posterior end of the ganglion. 
Total length 200-225/*; toes 15/*; trophi 24/*. 
A few specimens of this species were collected in a swampy 
region near English Creek, west of Atlantic City, New Jersey. 
It seems to be rare, as it has not so far been found elsewhere. 
Notommata venusta does not appear to be very closely related 
to any other described Notommatid, at least not to the point of 
possible confusion. The straight, very slender toes and the small 
auricles distinguished it from other small species of the genus, 
and the dorsal spur on the anterior portion of the manubrium is 
distinctive. 
