Bulletin 34, U. S. National Museum.— Cope. Batrachia of North America. 



Plate XI. 



j>u ^ 



Chthonerpeton indistinctum R. aod L. 



WJ'aZ Jfdo'S JioOPar 



4 



AmgMuma inean& Oard. 



Chthonerpeton and Amphiuma. 



