90 ENNEA. 



thickened, shortly expanded, continuous, right margin dilated 



above. Length, 8-9 mill. 



Mauritius. 

 G. BACILLUS, Pfr. PI. 22, fig. 9. 



Profoundly, arcuately rimate, solid, somewhat obliquely 

 striated, suture lightly dentate ; alabastrine white ; lip shortly 

 expanded, strongly margined within, parietal lamella small. 



Length, 13 mill. 



Mauritius. 



Unfigured Species. 



G. MACROGYRUS, Mousson. Isle of Gomera. 



Described from a single imperfect specimen, subfossil, and 

 compared with G. dealbatus. 



G. HELODES, G. BREVIS T G. MODiOLiNUS, all of Morelet. Mauritius. 

 G. UTRICULUS, Menke. Hub. ? 



Subgenus ENNEA, H. and A. Ad., 1855. 



Section UNIPLICARIA, Pfr., 1855. 

 E. CEREA, Dunker. PL 18, fig. 41. 



Subrimate, moderately solid, closely obliquely lirate, slightly 

 shining, subdiaphanous ; yellowish ; columella obliquely plicate, 

 parietal wall with a linguiform lamella. Length, 16 mill. 



Zanzibar, Madagascar, Ins. Comoro. 



E. PLANTI, Pfr. PL 17, fig. 25. 



Shortly rimate, somewhat thin, closely obliquely striate, 

 shining, pellucid ; hyaline corneous ; base smooth ; columella 

 with an oblique profound plica, parietal wall with a thin lamella 

 near the insertion of the outer lip; lip white, thin, narrowly 



reflected, margin thickened within. Length, 16 mill. 



Natal. 

 E. PUMILIO, Gould. PL 18, fig. 49. 



Rimate, somewhat solid, closely obliquely striate, scarcely 

 shining ; yellowish white ; suture closely crenate ; aperture with 

 a parietal plica and profound columellar tooth, lip dilated- 

 expanded, outer margin slightly arcuate. Length, 13 mill. 



Liberia. 



