170 



PUriN.-E. 



costulata, Nilss. 

 cupa, Jan. 

 Ferrari, Porro. 

 Hoppii, Moll. 

 Huttoniana, Bens. 

 infundibuliformis, D'Orb. 

 leucodon, Morel. 

 limnseana, Lowe. 

 rnicrospora, Lowe. 

 roonodou, Held. 

 muscorum, Linn. 

 Numeyeri, Kust 



oblonga, Pfeiff. 

 Parreyssi, Friv. 

 Sempronii, Char/). 

 Senegalensis, Morel. 

 Sorghum, Morel. 

 Sterrii, Voith. 

 taeniata, Shuttl. 

 tutula, Bens. 

 unibilicata, Draj). 

 umbilicus, Roth. 

 VillfB, Char}). 

 vulcauica, Kust. 



Sub-gen. leiosttla, Lowe (Charodrobia, Albers. Mastula, 



Lowe). 



Shell narrowly umbilicated, elongated or cylindrical ; aper- 

 ture with many plicae, transverse; peristome thin. 



cheilogona, Lowe. 

 concinna, Lowe. 

 ferraria, Lowe. 

 fusca, Lowe. 

 irrigua, Lowe. 

 laevigata, Lowe. 

 lamellosa, Lowe. 



laurinea, Lowe. 

 millegrana, Lowe. 

 monticola, Lowe. 

 recta, Lowe. 

 sphinctostoma, Lowe. 

 vincta, Lowe. 



Sub-gen. orcula. Held. 



Shell small, ovate-cylindrical, rimate or perforated ; aperture 

 semi-ovate; columella more or less plicate, apertural paries 

 uni-lamellate; peristome reflexed or expanded, slightly thick- 

 ened or simple. 



cerea, Dkr. 

 clavulata, Lam. 

 conica, Bossm. 

 corticaria, Say. 

 doliolum, Brug. 

 dolium, Drap. 



gularis, Bossm-. 

 Jumilleusis, Guirin. 

 nana, Mich. 

 pumilis, Gould. 

 Schmidtii, Kust. 

 scyphus, Friv. 



