

CATALOGUE OF UNIOS, ETC. 



No. 23. Unio gibbosus, Barnes, 

 nasutus, Lam. 

 dilatata, Raf. 

 arctior, (white nacre,) Lea. 



No. 24. Uiiio glaiis, Lea. 



/ NO. 25. UlliO graciliS, Barnes, 

 symph. gracilis, Lea. 



/ No. 26. Unio iris, Lea. 



subrostratus 1 Say. 



No. 27* Unio irroratus, Lea. 



stegaria ? Raf. 



No. 29. Uiiio Ise vidimus, Lea. 



symph. Icevissima, Lea. 



No. 29. Unio la pi 1 1 us Say. 



fabalis, Lea. 



No. ilO. Unio nionodontiis, Say. 

 soleniformis, Lea. 



