NORTH AMERICAN CONCHOLOGY. 



139 



[Ferussac, Tableaux Systematiciues.] 



Page. 



Name. 



Locality. 



38 



Helicodonta hirsuta Say. 



Helix isognomostomos Gmel. 



sinuata yGmel. 

 Stenotrema convexa Kaf. 



United States. 



38 



denotata Fer. 



Triodopsis scabra Raf. 



Kentucky. 



38 



clausa Raf. 



Triodopsis clausa Raf. 



Kentucky. 



38 



tridentata Say. 



Triodopsis lunula Raf. 



United States, Canada, 



38 



septemvolva Say. 

 Helix cereolus Megerle. 

 Pohjgyra septemvolva Say. 



Florida. 



38 



labyrinthica Say (pi. liB, f. 1). 



United States. 



43 



Helicella pulchella Mull. 

 Helix paludosa Angl. 

 minuta Say. 

 costata Miill. 

 crenella Mont. 

 Turbo helicinus LigMfoot. 



United States, Europe. 



43 



Richardii Fer. 



North America. 



44 



lineata Say. 



United States. 



44 



perspectiva Say. 



Lake Erie. 



44 



alternata Say. 



Helix radiata Gmel. 



United States. 



45 



glaphyra Say. 



United States. 



45 



planorboidea Raf. 



Mesomphix planorboides Raf. 



Kentucky. 



45 



arborea Say. 



United States. 



45 



laevigata Raf. 



Mesomphix laevigatus Raf. 



Kentucky. 



46 



buphthalmus Fer. 



New Spain. 



48 



variabilis Drop. (pi. v, f, 11, 12). 



England, &c., United 





Helix virgata Angl. 



[States. 





zonaria Donov. 







Pisana Dillw. 





49 



Pisana Mull. 



England, &c., United 





Helix media Gmel. 



[States. 





cingenda Mont. 







zonaria Pennant. 







strigata Dillw. 







rhoilostoma Drap. 





50 



Helicostyla Rafinesquea Fer. 

 Mesomphix (n. sp.) Raf. 



10 



Kentucky. 



