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



Plaie X 



W! G-.B.del. I.Smdair&Sm.litti.PMa. 



1. Helix tndentata,^ aHelix-Rugeli^/fe^/ 6.HelixHopetonensis,^/fe^. 

 2.Helixpalliata.5^. ^.Helixinflecta,^/. 7. Helix app re ssa,^-. 



5. Helix fall ax, aS^/-. 



