Ophiodon elongatus (Continued) 

 BUCEPHALIDAE 



Rhipidocotyle elongata McFarlane 1936. British Columbia. McFarlane 



(1936); Washington. Ching (1960a). 

 Prosorhynchus facilis (Ozaki 1924) Ekmann 1933. British Columbia. 



McFarlane (1936); Washington. Ching (1960a). 

 Prosorhynchus apertus McFarlane 1936. Washington. Ching (1960a); 



British Columbia. McFarlane (1936). 

 Bucephalus sp. California. Giles (1962). 



HEMIURIDAE 



Derogenes crassus Manter 1934. Oregon. McCauley (1960). 



Derogenes various (Muller 1784) Looss 1901. Washington. Lloyd (1938). 



Genolinea laticauda Manter 1925. Washington. Lloyd (1938). 



Hemiurus levinseni Odhner 1905. Washington. Lloyd (1938). 



Sterrhurus exodicus (McFarlane 1936) Yamaguti 1958. Central California. 



Stomach. Nahhas 3 British Columbia. McFarlane (1936); Washington. 



Lloyd (1938); Oregon. McCauley (1960) all as Lecithochirium e. 

 Tubulovesicula lindbergi (Layman 1930) Yamaguti 1934. Oregon. Stomach. 



McCauley (1960); Central California. Nahhas^ ° ; Washington. Ching 



(1960a); British Columbia. Arai (1969b). 

 Parahemiurus merus (Linton 1910) Woolcock 1935. British Columbia. 



Intestine. Arai (1969b). 

 Lecithaster gibbosus (Rudolphi 1802) Liihe 1901. British Columbia. 



Intestine. Arai (1969b). 



HIRUDIN0IDEA 



PISCIC0LIDAE 



Malmiana sp. Oregon. Exterior. Burreson 7 • 



IS0P0DA 



CYM0TH0IDAE 



Lironeca vulgaris Stimpson 1857. California. Gills. Richardson (1905) 



M0N0GENEA 



GYRODACTYLIDAE 



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



MICR0C0TYLIDAE 



Microcotyle sebastis Goto 1894. Washington. Guberlet (1936a). 



UD0NELLIDAE 



Udonella ophiodontis (Kay 1945) Winter 1955. Washington. On 

 Lepeophtheirus sp. attached to oral cavity. Kay (1945). 



370 



