Proc.Ac.Nat.SG.Phila.l875, 



Plaie X 



W.&.B.del 



1. Helix iridentata,5^^ 3.Hel]x.Rngell.6'.^^^/ 6.HelKHcpetoneiisis,a5'/^^;^Ki 



2.Helixpalliata, Say. 4.Helix mfleeta,<5'^/. 7. Helix appressa, Scty. 

 S.Helix-fallax.A^/-. 



