478 Wisconsin Academy of Sciencesy Arts, and Letters. 
Cephalodella forficula is common in weedy ponds everywhere. 
The propriety of including this species in the genus Cephalodella, 
which is virtually equivalent to Gosse’s Diaschiza, as emended by 
Dixon-Nuttall and Freeman, will probably not be questioned by 
anybody, as the presence or absence of a lorica is now generally 
conceded to be of small importance. 
CEPHALODELLA PANAEISTA Myers, new species. 
Plate XXXI, figures 5-7. 
The body is very large, elongate and slender. The head is fairly 
large and oblique anteriorly. The neck is marked by a slight con¬ 
striction. The abdomen increases gradually and very slightly in 
width for about three fourths of its length; the dorsal edge curves 
downwards posteriorly to the base of the foot. The integument is 
very flexible and the plates indistinct; the lateral clefts are very 
obscure, but apparently fairly wide and parallel-sided. The foot 
is short, stout and conical; the very small tail is near mid-length. 
The toes are very long, stout and recurved, tapering gradually to 
acute points; their length is a little less than one third of the total 
length. On the dorsal edge there is occasionally a single, toothlike 
spine; its distance from the base of the toe is about one third of the 
length. The foot glands are extremely long and slightly club- 
shaped. 
The corona is strongly oblique, convex and without projecting 
lips. 
The mastax is large and the trophi robust. On the inner ventral 
edges of the rami there are near the apex two denticulate, comblike 
lamellae, the left one much larger than the right. The fulcrum 
is long and straight, slightly expanded posteriorly; the manubria 
are short, recurved posteriorly, but not crutched, and have a large 
basal plate. The unci have the typical single tooth. The gastric 
glands are small. 
The ganglion is elongate and pyriform; no retrocerebral organ is 
present. The eyespot is frontal and the anterior part of the 
capsule is without pigment, simulating a ‘‘lens’^ 
Total length 360-375/>t; toes 102-105/x; trophi 65/x.. 
Cephalodella panarista is rare; we have found a few specimens at 
Four Mile Run, near Washington, District of Columbia, and in 
ponds at Tuckerton, Ocean County, New Jersej^ as well as in col- 
