NEW 



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OF THE 



UNITED STATES, 

 WITH COLOURED ILLUSTRATIONS; 



A MONOGRAPH Sfectfoto] •- ^^^^^^^ 



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GENUS ANCULOTUS OF SAY 



A SYNOPSIS OF THE AMERICAN NAIADES. 



BY T.' A^CONRAD, 



Member of the Acad, of Natural Scieiices of Philadelphia . 



PHILADELPHIA: 



JuDAii DoBsoN, 108 Chesnut Street, 



E. a. DORSEY, PEINTEIl. 



1834. 



