357] NORTH AMERICAN PARAMPHJSTOMIDAE—STUNKARD 77 



Anspruch darauf eriieben, als naturlicher oder (was dasselbe ist) 

 wissenseliaftlicher Klassifikationsversuch anerkannt zu werden. ' ' In the 

 same article he states that for many years he has been engaged in prepar- 

 ing a revision of the amphistomes but has not yet completed the work 

 which will present a classification based on the structure of the lymph 

 and excretory systems and the copulatory apparatus. 



The only arrangements of the genera of the family that have been 

 made heretofore are those of Fishoeder and of Stiles and Goldberger. 

 The classification of Fischoeder does not appear adequate and that of 

 Stiles and Goldberger is far from satisfactory, but for sake of complete- 

 ness both are appended in outline. 



Classification of Fischoeder (1903) 

 Paramphistomidae 



Paramphistominae 

 Paramphistomum 

 Gastrothylax 

 Stephanopharynx 



Species inquirendae, A. gigantocotyle 

 A. explanatum 

 Cladorchinae 

 Cladorchis 

 Gastrodiscus 

 Homalogaster 

 Diplodiscus 

 Chiorchis 



Species inquirendae; A. liawkesi, A. collinsi, A. oma- 

 tum, A. papUlatum, A. tuberculatum, A. emarginatum, 

 and A lunatum. 

 (Subfamily nov.) 

 Balanorchis 



Classification of Stiles and Goldberger (1910) 

 Paramphistomoidae 

 Gastrodiscidae 



Gastrodiscus ' 



Homalogaster 

 Gastrothylacidae 



Gastrothylacinae 

 Gastrothylax 

 Wellmanius 

 Carmyerius 

 Fischoederius 



