^ 



\ I D^6^ 



A SYNOPSIS 





FAMILY OF NAIADES 



BY ISAAC LEA, 



MEMBER OF THE AM. PHIL. SOC. ; OF THE ACAD. OF NAT. SCIENCES OF PHIL., 



OF THE LYCEUM OF NAT. HIST. OF NEW YORK ; OF THE 



AMERICAN GEOL. SOC. ; OF THE CEOL. SOC. OF PENN. ; OF THE PNITED 



STATES NATAL LYCEDM J HON. MEM. OF THE BOSTON SOC. OF NAT. HIST. ; OF 



THE MED. SOC. OF ORANGE COUNTY; OF THE ASIATIC 



SOCIETY, BENGAL ; OF THE PHYSICAL AND NATURAL HISTORY SOCIETY 



OF GENEVA J MEM. OF THE IMPERIAL SOC. OF NAT. HIST. OF MOSCOW ; OF THE 



ROYAL PHYSICAL SOC. OF EDINBURGH; COR. MEM. OF 



THE ZOOLOGICAL SOC. OF LONDON; OF THE ROYAL ACAD. OF SCIENCES 



OF TURIN; OF THE LINNa;AH SOC. OF BORDEAUX; OF THE NAT. 



HISTORY SOCIETY OF ATHENS; OF THE NAT. HIST. SOC. OF 



MOJfTKEAL ; ETC. ETC. 



M4^ Q 



^..' 



SECOND EDITION, ENLARGED AND IMPROVED. 



PHILADELPHIA : 

 CAREY, LEA & BLANCHARD. 



1838. 



