Proc.Ac,Nat,Sc.Phila]875. 



Plate XY 



W. G-. B. del ■l.im.dmS.Sm.i&L'^ Q^ 



l.MacroceramusGossei,/?^ 5. Steno^yra decoUata^^. S.CGeciliaiiellasulicyimclFLca,/^'^. 



2. Pupa rupicola,^^/. 6. Siicciiiea eS\xsd.,S<^u^/. 10. Succmea campesins^^^/ 



3. Succinea avara. Say. 7. Bulimus dealbatus , Say. 11. Succmea Imeata , W. GS. 



