CATALOGUE OP UNIOS, ETC. 



No. 7. Uiiio circulus, Lea. 

 lens, Lea. 

 subrotunda? Raf. 



/ No. 8. I iiio clavus, Lamarck. 

 scalenia, Raf. 

 patulus, Lea. 



No. 9. Unio compressus, Lea. 

 symph. compressa, Lea. 



No. 10. Unio Cooperianus, Lea. 



No. 11. Unio cornutus, Barnes. 



No. 12. Unio crassus, Say. 



ellipsaria, Raf. 

 ellipticus, Barnes, 

 carinatus, Barnes, 

 ligamentina, Lam. 



i\o. 13. Unio cylindricus, 



naviformis, Lam. 

 solenoides, Raf. 



