
888 THE AMERICAN NATURALIST. [VOL XXXVI. 
Subfamily III. Opisthorchiine Lss. 
Genera: Opisthorchis, Holometra, Metorchis. 
Related genus: Podocotyle. 
Subfamily IV. Telorchiinz Lss. 
Genera: Telorchis, Orchidasmus. 
Related genus : Deropristis. 
Subfamily V. Echinostomine Lss. 
Genera: Echinostoma, Stephanochasmus, Dihemistephanus, Stephano- 
prora. 
Related genus: Rhopalias. 
Subfamily VI. Psilostomine Pratt. 
Genera: Psilostomum, Crepidastomum, Rhytidodes, Allocreadium, Caly- 
codes, Azygia, Halicometra, Cotylotretus 
Related genera : Ptychogonimus, Orchipedum. 
Subfamily VII. Anisocceline Lss. 
Genera: Anisoccelium, Anisogaster. 
Subfamily VIII. Centrocestinz Lss. 
Genera: Centrocestus, Ascocotyle. 
Related genera: Acanthochasmus, Anoiktastoma. 
Subfamily IX. Cotylogoniminz Pratt. 
Genera: Cotylogonimus, Cryptocotyle. 
Subfamily X. Philophthalminz Lss. 
Genera: Philophthalmus, Pygorchis. 
Subfamily XI. Seung Pratt. 
Genera: Opisthioglyphe, Plagiorch 
Related genera: Glossidium, ‘eee Pachypsolus. 
Subfamily XII. Reniferinz Pratt. 
Genera: Styphlodora, Ochetosoma, Renifer, Oistosomum, Astiotrema. 
Subfamily XIII. Bunoderinz Pratt. 
Genera : Bunodera, Tergestia. 
Subfamily XIV. Haplometrinz Pratt. 
Genera: Haplometra, Hzmatoleechus, Ostiolum, Macrodera. 
Related genera: Opisthogonimus, Asymphylodora. 
Subfamily XV. Anaporrhutinz Lss. 
Genera: Anaporrhutum, Plesiorchorus. 
Related genus: Callodistom 

