CONTEIBUTIONS 



NORTH AMERICAN ICHTHYOLOGY 



BASKD PRIMARILY ON THE 



COLLECTIONS OF THE UNITED STATES NATIONAL MUSEUM. 



n. 



A. — Notes ou Cotlidw, Etheosiomatida', Peixidce, Centrarchidcp, AphododeridcB, Dorysomaiida, 

 and Cyprinidce, with revisions of the genera and descriptions of new or little 

 known species. 



B. — Synopsis of the Siluridw of the fresh waters of North America. 



DAVID S. JORDAN. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE, 



1877. 



