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



Plate XI. 



T. Sinclair SiSon. lith .Plaia 



W.G-.B.del. 



1 Helix albolabris,^ 3. HelixRoemeri.i^ 6 . Selix Clarki,Ziaz. 

 2.Helixetlterb7i^ w 4.HelixI)cwLeaiia^ 7. Helix exoleta^5V)z/z 



5 . Helix S ayii , Binn 



