359] NORTH AMERICAN PARAMPHISTOMIDAE—STUNKARD 79 



Paramphistomum 



Stephanopharynx . 



Cotylophoron 

 Cladorchinae Fischoeder 1901 



Cladorchis 



Taxorchis 



Chiorchis 



Pseudodiscus 



Microrchis 



Pseudocladorchis 



Watsonius 



Pfenderius 

 Diplodiscinae Cohn 1904 



Diplodiscus 



Opisthodiscus 



Catadiscus 

 Gastrothylacinae Stiles and Goldberger 1910 



Gastrothylax 



Wellmanius 



Carmyerius 



Fischoederius 

 Schizamphistominae Looss 1912 



Schizamphistomum 



(Gen. 7WV.) spinulosum 



Alassostoma 



Genera of uncertain position 

 (new subfamily) Fischoeder 1903 



Balanorchis 



-(new subfamily) see text p. 71 



Zygocotyle 



