Gasterosteus aculeatus (Continued) 

 STRIGEIDAE 



Cotylurus pileatus (Rudolphi 1802) Dubois 1937. Larva. USSR. 



Internal organs. Bykhovskaya-Pavlovskaya et al . (1962). 

 Apatemon gracilis (Rudolphi 1819) Szidat 1928. Metacercaria . 



British Columbia. Intestine. Lester (1974). 



HIRUDINOIDEA 



PI SCI COL I DAE 



Piscicola geometra (Linnaeus 1761). USSR. Bykhovskaya-Pavlovskaya et al 

 (1962). 



M0N0GENEA 



DACTYLOGYRIDAE 



Dactylogyrus sp. British Columbia. Gills. Lester (1974). 

 DISCOCOTYLIDAE 



Diplozoon paradoxum Nordmann 1832. Europe. Gills. Dawes (1947). 

 GYRODACTYLIDAE 



Gyrodactylus elegans Nordmann 1832. Washington. Guberlet (1936a); 



England. Gills. Dawes (1947). 

 Gyrodactylus alexanderi Mizelle and Kritsky 1967. 



California. Skin. Mizelle and Kritsky (1967d); British Columbia. 



Lester (1974). 

 Gyrodactylus arcuatus Bykhovsky 1933. Barents Sea. Gills, fins, 



skin. Polyanski (1955b); Britain. Chubb (1970a). 

 Gyrodactylus bychowskyi Sproston 1946. Barents Sea, Baltic Sea, 



Sea of Japan. Gills. Polyanski (1955b). 

 Gyrodactylus avalonia Hanek and Threlfall 1969. Ontario, Canada. 



Fins. Hanek and Threlfall (1969c). 

 Gyrodactylus canadensis Hanek and Threlfall 1969. Newfoundland. 



Gills. Hanek and Threlfall (1969c). 

 Gyrodactylus lairdi Hanek and Threlfall 1969. Newfoundland. 



Fins. Hanek and Threlfall (1969c). 

 Gyrodactylus memorial is Hanek and Threlfall 1969. Newfoundland. 



Fins. Hanek and Threlfall (1969c). 

 Gyrodactylus aculeati Malmberg 1956. Sweden. Gills. Yamaguti 



(1963b). 

 Gyrodactylus rarus Wegener 1907. England. Body surface, gills. 



Chappe'll (1969); Baltic Sea. Bykhovsky and Poljansky (1953). 

 Gyrodactylus pungitii Malmberg 1964. Britain. Chubb (1970a). 



GYRODACTYLOIDEA 



Genera and species. British Columbia. Gills, body surface. 

 Arai (1969b). 



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