112 JJniversitij of California Publications in Zoology [Vol. 20 



8. Leidyopsis is a member of the family Triclionymphidae Kent, in 

 the order Hypermastigina Grassi. It stands close to the genus Tricho- 

 nympha, to which it is related both moii^hologically and in its division 

 processes. 



Transmitted October 25, 1918. 



Zoological Laboratory , University of California, 

 Berkeley, California. 



