North American Helices, 



15 



Catalogue of the Sjoecies of Helix which inhabit North Ame- 

 rica {excliiswe of the Pacific Coast and Ifexico)^ arranged 

 especially with reference to the forms of the Shells^ and show- 

 ing the Genera and Subgenera in lohich they are placed by 

 Pfeiffer and Albers, 





Pfefffer 



, 1855. 



Albers, 1860. 





Malak. 



Blatt. 



Die Heliceen. 





Gen. Helix. 



Gen. Hyalina. 





Subgenera. 



Subgenera. 



fuliginosa Griff. 



Hyalina 





Mesomphix 



kopnodes W. G. Binn. 



m 





nr 



friabilis " 



= 





z:z 



caduca Pfr. 



(( 





Amraonoceras 



inornata Binn. 



— 





Mesomphix 



subplana " 



= 





(( 



laevigata Raf. 



a 





(( 



sculptilis Bid. 



= 





= 



cellaria Miill. 



u 





Hyalina 



nitida " 



a 





u 



hydrophila Ing. ? 









j-arborea " 



u 





u 



limatula Ward 



u 





i(. 



viridula Menke 



u 





il 



electrina Gould 









indentata Say 



n 





u 



Elliotti Redf. 



= 





= 



demissa Binn. 



a 





Mesomphix 



capsella Gould 



= 





(i 



ligera Say 



t( 





u 



intertexta Binn. 



u 





u 



fulva Drap. 



Conulus 





Connliis 



chersina Say 









egena " ? 









Fabricii Beck 



u 





u 



Gundlachi Pfr. 



u 





u 



gularis Say 



Gastrodonta 



Gastrodonta 



suppressa Sav 



u 





a 



XoTE. — The species marked = in the columns of the above Catalogue arc not 

 named by the Authors in the lists quoted. 



