;,510 Wisconsin Academy of Sciences, Arts, and Letters. 
lorica are very firm and the lateral cleft wide. The foot is large 
and conical; the tail is very small and near the middle of the foot. 
The toes are very long, recurved, stout at the base and taper 
gradually to acute points; their length is about two fifths of the 
total length. The foot glands are large and pyriform. 
The corona is slightly oblique and without projecting lips. 
The mastax is moderately large and of the normal type, the ful¬ 
crum and manubria rodshaped and slightly curved, but not 
crutched. The gastric glands are large and usually of a deep pink 
color. 
The ganglion is fairly large and saccate. Neither eyespot nor 
retrocerebral organ are present. 
Total length 100-110/x,; toes 40-45ja. 
Cephalodella strepta is not rare in weedy ponds with soft, acid 
water. We have collected it at Eagle River, Vilas County, Wiscon¬ 
sin, and around Atlantic City, New Jersey. It swims very slowly 
and deliberately, nearly always in a straight course, so that, when 
once seen, it is easily recognized in spite of its minute size; its 
behavior suggests the movements of a mechanical toy rather than 
the erratic course of other rotifers. It is possible that Stenroos’s 
Furcularia macrodactyla may have been described from speci¬ 
mens of this species; according to his description and figure his ani¬ 
mal differs in the form of the body and foot, as well as in its 
greater size and relatively longer toes. 
CEPHALODELLA MUCEONATA Myers, new species. 
Plate XXXVI, figures 2-4. 
The body is elongate, slender and slightly gibbous dorsally. The 
head is moderately long and obliquely truncate anteriorly. The 
neck is well marked. The abdomen is protected by a very rigid 
lorica, extending over the foot and projecting beyond it; the longi¬ 
tudinal clefts are deep and terminate at the foot sheath, which has 
a triangular ventral point and a stout dorsal spine, separated by 
a deep, rounded sinus. The foot does not project beyond the ven¬ 
tral point of the foot sheath. The toes are nearly as long as the 
body, unusually slender, slightly recurved and taper very grad¬ 
ually to acute points. 
The corona is slightly oblique without projecting lips. 
