Harring & Myers—Rotifer Fauna of Wisconsin — II. 469 
slightly and gradually towards the extreme posterior end, which 
is oblique and flaring. The foot is relatively small, conical and 
longer on the ventral side than on the dorsal; the tail is small and 
near mid-length. The toes are short and nearly straight, the an¬ 
terior half cylindric and the posterior tapering, ending in acute 
points; the dorsal edge is very slightly decurved, the ventral 
straight for half its length, converging gradually towards the dorsal 
margin; their length is less than one fifth of the total length. The 
foot glands are small and pyriform. 
The corona is only slightly oblique, convex and without project¬ 
ing lips. 
The mastax is large and of the typical form, but the trophi are 
delicate; the fulcrum is a long, straight, very slender rod, not 
expanded posteriorly, the manubria not crutched. The gastric 
glands are small and rounded. 
The ganglion is moderately long and saccate; the retrocerebral 
organ is absent. The eyespot is frontal and double, the two spheres 
fairly wide apart. 
Total length 210-220/>i; toes 36-40jU,. 
Cephalodella paxilla is rare; we have collected it among floating 
sphagnum in a soft, acid-water pond at Gravelly Run, near Mays 
Landing, New Jersey. 
CEPHALODELLA MARINA Myers, new species. 
Plate XXVI, figure 7. 
The body is moderately elongate, spindle-shaped, very slightly 
compressed laterally and faintly gibbous dorsally. The head is 
large, slightly deflexed and oblique anteriorly. The neck is some¬ 
what indistinct. The abdomen is slightly convex dorsally and 
deepest near mid-length; the lorica is very thin and flexible and the 
plates ill-defined; the lateral clefts are narrow anteriorly and in¬ 
crease gradually in width towards the posterior end. The foot is 
fairly long, stout and conical; the small tail is a little beyond mid¬ 
length. The toes are short, very slender, slightly decurved and 
taper gradually to very acute points; their length is somewhat less 
than one fifth of the total length. The foot glands are rather small 
and elongate ovate. 
The corona is decidedly oblique and somewhat convex without 
projecting lips. 
