DIGENETIC TREMATODES 41 



This parasite is limited to the area of Western Oregon, Southwestern 

 Washington, and Northwestern California. Chapin (1926) reported rumors of 

 this parasite from British Columbia, but they are doubtful. 



Taxonomy: Nanophyctus schikhobaloivi Skrjabin and Podiaposkaia, 1931, a 

 parasite of man, was considered a synoni'm of A'', salmincola by Witenberg 

 (1932) ; however, Philip (1955) thought that since this form is not known 

 from man in the Pacific Northwest, it must not be a s^^nonym. 



Morphology : The adult and the larval stages have been adequately described and 

 figured by Bennington and Pratt (1960). Other figures can be found in 

 Skrjabin (1958) for the adult and in Philip (1955) for the cercaria. The life 

 stages were not figured by Sinitsin (1930) when he worked on the life cj-cle. 



