BULIMULUS. 159 



Laurentii, Sow. pulverulentus, Pfeiff. 



lichenura, D'Orb. pustulosus, Brod. 



Limensis, Beeve. rbodacme, Pfeiff. 



Orbignyi, Pfeiff. scabiosus, Sow. 



rcricanus, Albers. scalariforrnis, Brod. 



Philippii, Pfeiff. scutulatus, Brod. 



pruinosus, Sow. striatus, King. 



Genus bulimulus, Leach. 



Shell solid, rimately perforated, oblong-conic or fusiformly 

 cylindrical ; apex horny, rather obtuse, last whorl shorter 

 than the spire ; aperture small, obliquely oval ; peristome 

 straight, labiate within, simple, or with teeth, right margin 

 rather expauded, the columellar reflexed and patulous. 

 Si/n. Zebrina, Held. Peristoma, Kryn. 

 Ex. B. montanus, Draparnaud, pi. 75, fig. 7. Shell, 

 B. detritus, Mutter, fig. 7, a. 



This group, as restricted, is European in its geographical 

 distribution, being chiefly found along the shores and among 

 the islands of the Mediterranean. The species of Rachis, 

 however, are found in Africa. The species of E/ia are 

 European with a few exceptions ; the Ncqueus group in- 

 habit the Canary Islands, Teneriffe, and Gomara ; those of 

 Omphalos ty la are confined to the islands of the Gallapagos 

 Archipelago ; Ataxus is from Cobija and Bolivia; while the 

 species of Petraus are entirely African in their geographical 

 range. 



Species of Bulimulus. 



Alepi, Ferus. Cosensis, Beeve. 



Apeiminus, Jan. Cretensis, Pfeiff. 



candelaris, Pfeiff. cymatilis, Beeve. 



