NEW 
jFmt> Water Sftetls 
OF THE 
UNITED STATES, 
WITH COLOURED ILLUSTRATIONS, 
AND 
A MONOGRAPH 
OF THE 
GENUS ANCULOTUS OF SAY; 
ALSO 
A SYNOPSIS OF THE AMERICAN NAIADES. 
BY T. A. CONRAD, 
Member of the Acad . of Natural Sciences of Ph iladelphia . 
PHILADELPHIA: 
Judah Dobson, 108 Chesnut Street. 
E. G. DORSEY, PRINTER. 
1834 . 
