^ ^ 



OBSERYATIONS 



GENUS UNIO, 



TOGBTHEU WITH 



DESCRirTK)^". OF NEW ETLCJiG IN 'i^HE iAMILIES UNIOlsID^, COLDJV^lA 



.'.ND MELAKIA-aA. 



KJiAl) UKi'UKE THJi AMEKICA.N llULUSUl'lUCAL .SUCILI'V, AND OIUGINALLY 

 I'UBLISIIKD IN ITS TRANSAtXIO.NS. 



i;\ 



1S\AC LEA, 



jt.il ot ml '■ "i I I'- ■!' . I'lhNfi: III j'lii 'iiA. 



-E IM,-. i.I.V! 



. Ill .' u. I .\l' 



WITH NUMElvUlJ? PLATES. 



VOL. \ 



rHlLADELrHl A: 



PRINTED FOR THE AUTTTOT?. 

 w. f. vorsa, rnnmiB. 



-S 



