

A 



SYNOPSIS 



<3P 



FAMILY OF NAIADES. 



BY 



ISAAC LEA, 



MEMBER OF THE AMERICAN PHILOSOPHICAL SOCIETY; 



OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA; 



OF THE ZOOLOGICAL SOCIETY OF LONDON, ETC. ETC. 



THIRD EDITION, GREATLY ENLARGED AND IMPROVED. 



PHILADELPHIA: 

 BLANCHAKD AND LEA. 



1852. 





