NORTH AMERICAN CONCHOLOGY. 



101 



Tage. 



Name. 



207 



Spiralis physodes Shuttl. 



207 



acus Shuttl. 



December, 1852. 



296 



Cylindrella filicosta Shuttl. 



301 



Schasicheila Shuttl. (n. g.) 



301 



alata Alke. 





Helicina alata Mke. 



302 



Nicoleti Shuttl. 



303 



Helicina Sandozi Shuttl. 



303 



delicatula Shuttl. 



303 



chrysocheila Shuttl. 



304 



data Shuttl. 



304 



cinctella Shuttl. 



Locality. 

 Cordova, Vera Cruz. 

 Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Mexico. 



Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Cordova, Vera Cruz. 



Aus dem Jahre 1854. (Marcli, 1854.) 



Beitrage zur naheren Kentniss der Land- und Siisswasser-Mollus- 

 keu der Insel Portorico. 



36 Helix vortex Pfr. Florida, &c. 



//. se/eiiina Gould. 



37 minuscula Bimu Porto Rico. 



//. m'lnntaUs Mor. 

 43 varians Mke. Florida, &c. 



H. poljjchroa Binn. 

 submeris Migh. 

 46 Stenogyra subula Pfr., Sfc. 



52 Pupa servilis Gould. Florida, &c. 



53 fallax Pfr. = Bulimus nitidulus? 



96 Planorbis tumidus Pfr. Mexico, &c. 



98 Lymneus Cubensis Pfr. 



L. utnbilicdld Ad. ? 



99 Ancylus obscurus Ilald. St. Thomas, &c. 



Pfeiifer. — SymbolaD ad Historiam Ilcliccorum, auctore Dr. 

 LuD. rFEiFi'ER. Cassel, 1841. 



Page. 



Name. 



Locality. 



37 



Helix Humboldtiana Fa/. 



Mexico. 



38 



bicincta Pfr. 



Mexico. 



39 



Rafinesquea Fer. 



II. lifji'.ra Say {teste Fer). 



Kentucky. 



41 



griseola Pfr. 



Vera Cruz. 



41 



multilineata Say. 



North America, 



