496 Wisconsin Academy of Sciences, Arts, and Letters. 
presence of the minute and all but invisible tuft of setae at the base 
of the toes, which we consider trivial. 
Ehrenberg’s figure and description of Pleurotrocha leptura prob¬ 
ably refer to this species; his figure of the mastax accompanying 
the original description shows that it belongs to Cephalodella. As 
his name has never been used by anybody else for the species under 
consideration and the identification is not absolutely certain, its 
resurrection at this time is probably unnecessary. 
CEPHALODELLA PHELOMA Myers, new species. 
Plate XXXII, figure 3. 
The body is elongate, slender and nearly cylindric. The head is 
unusually long and extremely oblique. The neck is slightly con¬ 
stricted dorso-ventrally and excessively compressed transversely, 
its width being less than half the width of the head. The abdomen 
is fusiform and increases slightly in width towards the base of the 
foot; the integument is so flexible that it can hardly be called a 
lorica, and the plates are very obscure; the lateral clefts are narrow 
anteriorly and increase gradually in width towards the posterior 
end. The foot is large and robust; the tail is fairly prominent. 
The toes are short, stout and decurved, with the ventral edges some¬ 
what undulate; the basal portion is nearly cylindric and the pos¬ 
terior tapers gradually to acute points; their length is about one 
sixth of the total length. The foot glands are very long and tubu¬ 
lar. 
The corona is excessively oblique and slightly convex without pro¬ 
jecting lips. 
The mastax is large and of the normal type; the fulcrum is broad 
and very slightly expanded posteriorly, the manubria unusually 
long, nearly straight, rodlike and stout. The bladder is very 
large. 
The ganglion is very long and pyriform; eyespot and retrocere- 
bral organ are absent. 
Total length 200/x; toes 35/x. 
Cephalodella pheloma is rare; we have found only a few speci¬ 
mens among Fontinalis and submerged sphagnum growing in soft, 
acid water in a shallow pond at Estellville, near Atlantic City, 
New Jersey. It appears to be closely related to C. megalocephala, 
but is readily distinguished by the more slender body, long foot 
