[BERUS. 



211 



desidens. Bang. 

 dilutus, Pfeiff. 

 Eichwaldi, Pfeiff. 

 electrinus, Gould. 

 faustinus, Ziegl 

 foetens, Stml. 

 Fontenillii, Mich. 

 frigid us, Jan. 

 glacialis, Thomas. 

 guttatus, Oliv. 

 Heldreichi, Shitttl. 

 hirtus, Mke. 

 Hispanus, Linn. 

 Hoffmanui, Partsch. 

 insolidus, Ziegl. 

 intermedins, Ferns. 

 Lefebvrianus, Ferus. 

 macrostoma, Miihlf. 

 Narzanensis, Friv. 

 Naxiauus, Ferus. 

 pauxillus, Gould. 



Pouzolzi, Desh. 

 pratensis, Pfeiff. 

 Pyrenaicus, Drap. 

 Preslii, Ziegl. 

 Rossmassleri, Pfeiff. 

 Sadlerianus, Ziegl. 

 Schmidtii, Ziegl. 

 setipila, Ziegl. 

 setosus, Ziegl. 

 spirillus, Gould. 

 spiriplanus, Oliv. 

 sportella, Gould. 

 stenornphala, Mke. 

 strigatus, Mull. 

 strigosus, Gould. 

 tigrinus, Jan. 

 trigrammephora, D'Orb. 

 trizona, Ziegl. 

 Ziegleri, Schmidt. 

 Zinguletta, Ziegl. 

 zonatus, Stud. 



Sub gen. arianta, Leach. 



Shell perforate, depressly globose, thin, last whorl gradually 

 descending; peristome broadly labiate, the margins parallel, the 

 basal dilated at the umbilicus. 



arbustorum, Linn. 

 Californiensis, Lea. 

 Dupetithouarsii, Desh. 



fidelis, Gray. 

 semicastaneus, Pf\ iff. 

 Townsendianus, Lea. 



Sub-gen. elona, H. and A. Adams (Sterna, Albcrs, not Linn.). 



Shell thin, horny, widely umbilicated, discoidal, flat above ; 

 spire involute, apex immersed, last whorl inflated ; peristome 



