574 Wisconsin Academy of Sciences, Arts, and Letters. 
This species, described by de Beauchamp from a pond in the 
forest of Fontainebleau (Seine et Marne), and also found in the 
swamps of the Dombes (Aisne), France, appears to be rare. We 
have collected it only at Mamie Lake and Eagle River, Yilas 
County, Three Lakes, Oneida County, and Mather, Juneau 
County, Wisconsin. 
Notommata cerberus is closely related to Notommata galena, 
from which it differs in being much larger, and from all other 
known Notommatids it differs in having a median notch in the 
posterior margin of the tail. 
Notommata Galena Harring and Myers, new species 
Plate XLYI, figures 1-4 
The body is slender, its greatest width being about one fourth 
the length. The integument is fairly stiff and the general outline 
relatively constant. The entire body has a light orange-brown 
tint. 
The rather small head and the neck are separated by a slight 
fold, and a second, more strongly marked fold divides the neck 
from the abdomen. The neck is slightly larger posteriorly; the 
abdomen increases gradually to its greatest width at a point a 
little beyond mid-length; it is then rapidly reduced to the base of 
the foot, the first joint of which is considerably wider than the 
second and nearly twice as long. The tail has a large, rounded 
central lobe and two minute lateral lobes. The toes are about one 
fifteenth of the total length, their inner edges straight and outer 
edges slightly curved; viewed laterally they are rather large at 
the base, tapering gradually to the point, and very slightly de- 
curved. 
The dorsal and lateral antennae are small setigerous pits and 
in the normal positions. On the second foot joint there is a 
minute circular pit, which appears to have a few short setae in 
its center. 
The corona extends down on the ventral side about one fourth 
the length of the body; the post-oral portion projects slightly 
from the body, forming a “chin”. The auricles are of medium 
size and provided with strong tufts of cilia, continuous with the 
corona. 
The mastax is of the normal, pumping type and has the usual 
trilobate appearance when seen from the ventral side. The trophi 
