Proc.Ac.Nat.Sc,Phila.l875. 



Plate XL 



T.SmclairStSmtlifii.! 



W.G-.B.del. 



IHelixialtiok'bris.^^S HfiiixRoemen.i^/^ G.Selix Clarki,^^/. -i, ^■ 

 S.HelnLWetlierbyi^^^A.HelisDo^/nieaiia^/- 7.HeljxexDleta^^:^^> '^ 

 5 . Helix: S ayii , Binn . 



