Pkoceedin'gs Roches-1-er Academy of Science, Vol. 2, 



Plaie 8. 



MoUusca of Monroe County 



Unio rubiginosus, Lea. 

 Margaritana rugosa, Bar. 

 Anodonta subcylindracea, Lea. 

 Sphsrium similis, Say. 



" partumeium, Say. 



Pisidium variabile, Prime. 



