CATALOGUE OF UNIOS, ETC. 



No, 7, Uiiio circulus, Lea. 

 lens, Lea. 

 subrotunda ? Raf. 



I¥o. §. UniO clavus, Lamarck, 

 scalenia, Raf. 

 patulus, Lea. 



IVo. 9. Uiiio compressus, Lea. 



symph. compressa, Lea, 



No, 10. Uiiio Cooperianus, Lea. 



No. 11. Unio coruiUus, Bames. 



No. la, Unio crassus, Say. 

 ellipsaria, Raf. 

 ellipticus, Bames. 

 carinatug, Bames. 

 ligamentina, Lam. 



No, 13. Unio cylindricus, 



naviformis, Lam. 

 solenoides, Raf. 



