586 Wisconsin Academy of Sciences, Arts, and Letters. 
Notommata telmata was collected at Gravelly Run, near Atlan¬ 
tic City, New Jersey; it is not known from any other locality. 
This species is closely related to Notommata cyrtopus, but is 
easily distinguished by the peculiar toes, as well as by the more 
slender body and the characteristics of the retrocerebral organ. 
Notommata Lenis Harring and Myers, new species 
Plate L, figures 9-13 
The body is fairly slender and spindle-shaped; its greatest 
width is about one fourth of the total length. The integument is 
moderately rigid, and the outline remains fairly constant. It is 
not very transparent. 
The head segment is comparatively short and broad, its width 
being about three fifths of the greatest width of the body. The 
neck segment is very little wider, but nearly twice as long. The 
anterior transverse folds are well marked. The abdomen in¬ 
creases very slightly in width to about mid-length, and from there 
tapers gradually to the base of the foot, ending in a three-lobed 
tail; the median lobe is unusually long and narrow, rounded 
posteriorly and separated from the small lateral lobes by a slight 
indentation. The foot has two joints, the anterior fairly long 
and robust, the posterior divided by a median notch into two 
papillae bearing the toes, which are short, conical, and abruptly 
reduced to short, acute points; their length is only one twenty- 
fifth of the total length. The anterior foot joint has a small seti- 
gerous papilla on its posterior dorsal margin. 
The dorsal antenna is remarkable for being double; the two 
tufts of sensory setae are about 10y apart and united by a slender 
muscle as in Asplanchna. The lateral antennae are in the normal 
position. 
The corona extends down on the ventral side of the body about 
one fourth the length of the body; the post-oral portion projects 
from the body as a slight chin. The auricles are small, but have 
numerous long cilia, continuous with the corona. 
The mastax is virgate with somewhat asymmetric trophi. The 
fulcrum is very long and slender, broad at the base and tapering 
gradually to the expanded posterior end. The rami are roughly 
semicircular in ventral view, and are bent at a nearly right 
angle at the extreme anterior point. The right ramus has a 
