357] PSEUDOPHYLLIDEA FROM FISHES— COOPER 69 



ing of the common vitelline duct into the oviduct is not from the right side only 

 but from either side; the opening of the uterus, and not that of the vagina, is 

 not strictly median but alternating irregularly from side to side, while there is 

 no enlargement of the uterus just before its opening; and finally, but of least 

 importance, there is no fusion of the bothrial apertures. Consequently it 

 seems fitting to consider this form a new species. 



The material studied consisted of two somewhat fragmentary lots, Nos. 205 

 and 206 of the writer's collection, from Pseiidopleuronectes americanus (Wal- 

 baum), the winter flounder. 



