Proc.Ac.Nat.Sc.Phila.1875. 



Plate XII. 



WG.B.del. 



1 Helix elevata,^- 



2. Helix Columbiana. Za^. 



3. Helix Mobiliana^cz. 



4. Helix devia,^. 



T. Sinclair & Sou Sth.flKia 



5. Helix profunda, Say. 



6 . Helix multiline ata, say. 



7. Helix clans a. Say. 



8. Helix dentifera, Binn,. 



