196 



BIBLIOGRAPHY OF 



181 



182 



182 

 183 

 184 

 136 



194 



196 

 19S 

 198 

 201 



206 



208 

 208 



213 



218 



219 



221 

 222 

 222 



Name. 

 Helix tridentata Say. 



Helicodonta tridentata Say. 



var. Tridopsis lunula Rafin., Beck. 

 tridentata Beck. 

 Troostiana Lea. 



Polygyra Troostiana Lea. 

 tudiculata Binney. 

 Vancouverensis Lea. 

 ventrosula Pfr. 

 zaleta Say. 



H. albolahris Fer. 

 Bulimus dealbatus Say. 



Helix dealhata Say. 



var. Buliminus dealbatus Beck, 



Zehrina dealhata Held. 

 fenestratus Pfr. 

 Gruneri Pfr. 

 Hegewischi Pfr. 

 Mescicanus Lam. 



Cochlogena vittata Fer. 



var. Bulimulus Alexicanus Beck. 

 punctatissimus Lsss. (var.) 



Clausilia exesa Pot, et M. 



Cocklodina exesa Fer. 



Auricula fuscagula Lea. 



Pupa septemplicata Miihlf. 



Odontostomus fuscagulus Beck. 



Bulimus septemplicatus Pfr, 

 rudis Anton. 

 Schiedeanus Pfr. 



B. xanthostomus Wiegm. 



var. B. candidissimus Nyst, 

 zebra Mull. 



Buccinum zebra MiilL, &c. &c. 

 Achatina fasciata 3Iull. 



Buccinum fasciatum Mull., &c, &c. 

 lubrica Bliill. 



Helix lubrica MiilL, &c. &c. 

 Rangiana Pfr. 

 trochlea Pfr. 

 truncata Gmel. 



Bulla truncata Gmel. 

 Buccinum striatum Chemn. 

 Bulimus striatus Brug. 



Locality. 

 New York. 



N. England, Canada. 



Pennsylvania. 



Tennessee. 



California. 

 Oregon. 

 Mexico. 

 New York. 



Tennessee. 



Alabama. 



Mexico. 

 Mexico. 

 Mexico. 

 Tabasco. 



Mexico. 



Mexico. 

 Mexico. 



Mexico. 



Florida. 



Massachusetts. 



Mexico. 

 Mexico. 

 Florida, &c. 



