CONTEIBUTIO^S 



BASKD PKIMAEILY ON THE 



COLLECTIONS OF THE UNITED STATES NATIONAL MUSEUM. 



n. 



A. — Notes ou CoUidcB, EtlieosiomatidcB, Percidce, CentrarcMdcB, ApTiododeridce, Dorysomaiidce, 

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

 known species. 



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



DAVID S. JORDAN. 



WASHINGTON: 



GOVERNMENT FEINTING OFFICE, 



1877. 



