54 HELICIDiE. 



BuLiMiNUS, Ehrenb., 1831. 



Diatr. — 350 sp. Old world. 



Shell solid, rimate, 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 expanded, the colu- 

 mellar reflexed and patulous. 



Animal similar to Bulimus. Jaw arcuated, finely longitudinally 

 striate ; dentition like Helix. 



Petrseus, Albers, 1850. Shell oblong-conical or subcj'lin- 

 drical ; whorls 6-8 ; aperture oval or oblong-oval ; columella 

 folded ; peristome thick, sometimes reflected, the extremities 

 approaching, usually united bj' a callus. B. labrosus^ Oliv. (xcix, 

 (j3 . 32 sp. Greece, Asia Minor, Turkestan, Arabia, E.Africa, 

 India. 



Ena. Gray, 1840. (Merdigerus, Albers, 1850. Peristoma, 

 Kryn., 1833. Napseus, Albers, 1850.) Shell oval-oblong or 

 siibcylindrical ; whorls 1-9, the last about half the total length ; 

 apertiire oval ; peristome labiate within ; columellar lip dilated. 

 B. badiosus, Fer. (xcix, 64). 80 sp. Warm regions of the eastern 

 hemisphere. 



LeuGOchiloides, Pfr., 1818. B. csenopicta^ Hutton (xcix, 65). 

 10 sp. India, Arabia, Senegal, etc. 



Gylindrus, Fitz., 1833. B. obtusus, Drap. Aus^trian Alps. 



Medea^ Boettger, 1883. Ovately conical, profoundly rimate, 

 thin, shining ; white or corneous, sometimes with a median fus- 

 cous zone ; whorls spirall}^ lineolated, the last rounded at base ; 

 aperture large, with remote margins, sometimes joined by a slight 

 callus. B. Baddei, Kobelt. Caucasus. 



Pupoides, Ffv., 1854:. B.marginatus,Sa.y. 1 sp. United States, 

 West Indies, Mazatlan. 



Mastus, Beck, 1837. Shell cylindrical, subpupiform, subper- 

 forate, apex obtuse ; whorls numerous ; aperture small, rounded- 

 oval ; columella short, straight, peristome labiate within. B. 

 po/i/gryra^ws, Reeve (xcix, 66;. lisp. India, Zanzibar, etc. 



Zebrina, Held, 1837. (Brephulus, Beck [part], 1837. Buli- 

 mulus, Risso, 1826. Adams, 1855.) Shell solid, rimately per- 

 forated, oblong-conic or fusiformly cylindrical, apex horny, 

 rather obtuse, last whorl shorter than the spire ; aperture small, 

 obliquely oval ; peristome straight, labiate within, dentate, right 

 margin rather expanded, the columellar reflexed and patulous. 

 B. fasciolatus, Fer. (xcix, 67). B. Tourvefortianus^ Fer. (xcix, 

 68). 36 sp. Eastern Europe, W. Asia. 



Chondrula^ Beck, 1837. (Chondrus, Cuv., 1817. Jaminia, 

 Risso, 1826. Gonodon, Held, 1837. Encore, Agassiz, 1837. 

 Mirus, Albers, 1850.) Shell rimate, ovate-oblong, apex acumi- 

 nated ; whorls 7-9, the last nearly one-third of the length ; 



