60 TREMATODES OF THE PACIFIC NORTHWEST 



Phylum MOLLUSCA 



Class GASTROPODA 



Order PULMONATA 



Family LYMNAEIDAE 



Galba hulminoides — synonym of Lytnnaca biilminoides hulminoides 



Galha ferruginea — synonym of Lyninaca ferniginea 



Lymnaca huhninoides hulminoides Lea 



Synonym : Galba buliminoidcs 



Fasciola hcpatica 

 Ncoglyphe locellus 



Lymnaea ferniginea Haldeman 



Synonym : Galba ferruginea 



Fasciola hepatica 



Lymnaea pahistris nuttalliana Lea 



Synonym : Stagnicola paltistris nuttalliana 



Trichobilharsia elvae 

 Schistosomatium douthitli 



Lymnaca stagnalis (Linnaeus) 



Plagiorchis parorchis 

 Trichobilharzia elvae 

 Cercaria burti 

 Cercaria sanjuanensis 



Lymnaea stagnalis jugulus Say 



Trichahilharzia elvae 



Lymnaca trunculata (?) 



Fasciola hepatica 



Stagnicola palustris nuttalliana — synonym of Lymnaca pahistris 



nuttalliana 



Family PHYSIDAE 



Physa ampullacea Gould 



Physa conformis Tryon 

 Physa gyrina Say 



Trichobilharzia physellac 

 Trichobilharzia oregoncnsis 



Trichobilharzia adamsi 

 Cercaria columbiensis 



Trichobilharzia physellac 

 Cercaria robinsonensis 

 Gigantobilharzia huroncnsis 



