l6 ROCHESTER ACADEMY OK SCIENCE. [Ocl 26, 



Unio luteolus, Lam. Genesee river. 

 Unio silic/uoideiis^ Bar. 

 " in flat us, Bar. 

 " nielinus, Con. 

 Unio occidens, Lea. Erie canal. 

 Unio ventricosiis, Say. 

 " cardiiim, Con. 

 Unio plicatus, Less. Erie canal. 



Unio periwianus, Lam. 

 " undi/laia, Desh. 

 " multiplicata, Desh. 

 " crassus, Bar. 

 Mya plicata, Eaton. 

 Unio pressus, Lea. Genesee river. 

 Unio compressa, Lea. 

 " compressus, Con. 

 Unio radiatus, Lam. Genesee river. 

 Unio Virginiana, Mke. 



" dista?is, Anth. 

 Mya radiata, Gml. 

 " oblong a, Wood. 

 " pictoruni tenuis., Chem. 

 Unio rectus, Lam. Erie canal. 



Ufiio prcelongus, Bar. 

 " arquatus, Con. 

 Unio rosaceus, De Kay. Charlotte. 

 Unio rubiginosus, Lea. Genesee river. 

 Unio flavus, Con. 

 " cerinus, Con. 

 Cumicula rubiginosa, Swain. 

 Unio Tappanianus, Lea. Genesee river. 

 Unio Viridis, Con. 



Unio undulatus, Bar. Erie canal. 



Unio costatus, Raf. 

 " plicatus, Con. 



Mya undulata, Eaton. , 



Margaritana rugosa, Bar. Genesee river. 



Alasmodonta abducta. Say. 



Unio rugostis, Chenu. 



Complanaria rugosa, Swain. 



