6 TREMATODES OF THE PACIFIC NORTHWEST 



Megalocotyle marginata Folda, 1928 



Synonym: Trochopos marginata (Folda, 1928) Price, 1936 



Hosts : Sehastodes nebulosus Wash. Folda, 1928 



Sehastodes maliger Wash. Bonham, 1950 



Sehastodes caurinum Wash. Bonham, 1950 



Sehastodes melanops Wash. Bonham, 1950 



The only other report of this parasite is from Alaska from two species of 

 Sehastodes (Bonham, 1950). 



Megalocotyle trituba Pratt and Aldrich, 1953 



Hosts : 



This parasite has not been reported outside of the Pacific Northwest. 



Family CHIMAERICOLIDAE 



Chimaericola leptogaster (Leuckart, 1830) Brinkmann, 1942 



Sj'nonym : Octohothrium leptogaster Leuckart, 1830 



Host : Hydrolagus collei Wash. Bonham, 1950 



Sproston (1946) listed records of this form from Chimaera monstrosa from 

 the North and Mediterranean seas. 



Family DACTYLOGYRIDAE 



Dactylogyrus anchoratus (Dujardin, 1845) Wagener, 1857 



Synonym : Gyrodactylus anchoratus Dujardin, 1845 



Host : Cyprinus carpio B.C. Monaco & Mizelle, 1955 



This parasite has been reported from a number of cyprinids from Europe 

 (Sproston, 1946; Kastak, 1956). In North America it has been reported from 

 New York (Mueller, 1936). This would appear to be a European species that 

 was brought over with the host. 



Dactylogyrus banghami Mizelle and Donahue, 1944 



Hosts : Richardsoniiis baltcatus B.C. Monaco & Mizelle, 1955 



Rhinichthys caiaractae B.C. Monaco & Mizelle, 1955 



Couesius plumbcus B.C. Monaco & Mizelle, 1955 



This has also been reported from Ontario (Mizelle and Donahue, 1944). 



Morphology: Redescribed by Monaco and Mizelle (1955). 



Asterisks denote new (previously unpublished) records of the parasite in the area. 



