

Trematodes 



of the 



Pacific Northwest 



An Annotated Catalog 



Ivan Pratt 

 Professor of Zoology >.^^ 



James E. McCauley | ^ 

 Research Associate in Zoology , „ 



L 1 O \\ r\ i\ 

 I V/. I;. I. 



OREGON STATE UNIVERSITY PRESS 



Corvallis, Oregon 



