498 Wisconsin Academy of Sciences, Arts, and Letters. 
CEPHALODELLA EETUSA Myers, new species. 
Plate XXXIII, figure 6. 
The body is rather short, fusiform and fairly stout. The head 
is large and obliquely truncate anteriorly. The neck is not very 
strongly marked. The abdomen is nearly parallel-sided and very 
slightly gibbous dorsally; the lorica is fairly rigid and the plates 
well marked; the lateral clefts are narrow and parallel-sided for 
about one half of their length, increasing slightly in width towards 
the posterior end. The foot is moderately large and robust; the 
tail is very small. The toes are short and stout; the ventral edge 
is straight in its entire length, the dorsal for about three fourths 
of its length, and from this point it curves rapidly towards the 
ventral edge, meeting it in an acute point; the length of the toes 
is about one fourth of the entire length. The foot glands are small 
and pyriform. 
The corona is strongly oblique and convex without projecting 
lips. 
The mastax is fairly large and of the normal type; the fulcrum 
is expanded posteriorly and the manubria crutched. 
The ganglion is very large and saccate; eyespot and retrocerebral 
organ are absent. 
Total length 100/x; toes 24ja. 
Cephalodella retusa is not common; we have collected it among 
sphagnum growing on the bottom in shallow water of Doughty’s 
Mill Pond, about two miles west of Absecon, New Jersey. It is 
related to C. forficata, but is much smaller and the form of the 
toes is quite different. 
CEPHALODELLA DIXON-NUTTALLI Myers, new species.^ 
Plate XXXIII, figures 4-5. 
The body is elongate, fairly slender and laterally compressed. 
The head is rather small, slightly deflexed, and obliquely truncate 
anteriorly. The neck is not strongly marked. The abdomen in¬ 
creases gradually and very regularly in width from the neck to 
the posterior end; the dorsal and ventral edges are almost straight 
lines. The lorica is very thin and flexible and the plates are diffi¬ 
cult to trace; the lateral clefts are narrow anteriorly and the edges 
diverge rapidly and regularly towards the posterior end, where 
their distance apart is half the width of the abdomen. The foot 
