NORTH AMERICAN CONCHOLOGY. 



141 



[Ferussao i 



and Des! 



liayes, Histoire des Mollusques.; 



1 



Vol. i. 









Pa. PI. 



Fig. 



Name. 



Locality. 



5 li 



6 : 



Helix septemvolva Fer. 



Helicodonta septemvolva Fer 

 Polygyra septemvolva Say. 

 Helix cereolus MuMd. 

 planorhula Lam. 



Florida. 



21 Ixix E 



12-17 



pulchella Mull. 

 Helix minuta Say. 



France, &c. 



69 Ixx 



4 



profunda Say. 



Helicella RicharcH Fer. 

 Helix Richardi Desh. 



Texas. 



70 Ixix I 



2 



Sayii Binney. 



Helix diodonta Say. 



Sli. of Mississippi. 



72 li 



3 



tridentata Say. 



United States, Guad- 







Helicodonta tridentata Fer. 



[eloupe. 







Tridopsis lunula Bk. 









tridentata Bk. 





73 Ixix D 



3 



Dorfeuilleana Lea. 

 Polygyra plicata Say. 



United States. 



74 Ixix D 



2 



Texasiana Mor. 



Polygyra fatigiata Say. 

 Tridopsis tridonta Bk. 

 Helix fi/tigiata Binn. 



Texas. 



75 Ixix D 



4 



Troostiana Lra. 



Polygyra Troostiana Lea. 



United States. 



76 1 



3,4 



auric ulata Say. 



Helicodonta auriculata Fer 

 Polygyra auriculata Say. 

 Helix isognomostomos Gniel 



punctata Dillw. 

 Doedalochila auriculata Bk 



Virginia., Florida. 



78 1 



1 



pustula Fer. 



Texas. 



78 1 



2 



avara Say. 



Florida, near Lake 







Helicodonta nvara Fer. 



[Cayuga. 







Polygyra avara Say. 









Helix Sayii Wood. 









Stenotrema nvara Hartm. 









Dfcdolochila avara Beck. 









Helix auriculata Binney. 





gpflxxix 

 I Ixxxvi 



1} 



lineata Say. 



Helicella lineata Fer. 



United States. 



81 Ixxix 



7 



perspectiva Say. 

 H. patula Desh. 



New York. 



