AMERICAN 



MARINE CONCHOLOGY: 



OR, 



DESCRIPTIONS OF THE SHELLS 



ATLANTIC COAST OF THE UNITED STATES, 



FROM MAINE TO FLORIDA. 



BY 



GEORGE W. TRYOIS", Jk., 



MEMBER OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 



L 



PHILADELPHIA: 



PUBLISHED BY THE AUTHOR, 



Xo. 19 North Sixth Street. 



