102 ENNEA. 



E. CQSTULATA, Morelet. PI, 20, fig. 38. 



Concavely rimate, crystalline ,. plicately costulate ; aperture 

 with a compressed parietal plica, a tooth near the base of the 

 columella, and a third on the middle of the right margin. 



Length, 3 mill. Ins. Mayotte. 



E. HORDEUM, Morelet PI. 20, fig. 54. 



Rimately perforate, thin, shining, lightly costulate, whitish ; 

 aperture with a bipartite parietal lamella, approaching a tooth 

 on the outer margin, and a scarcely conspicuous basal tooth 

 near the columella ; lip shortly expanded, slightly reflected. 



Length, 5 mill. Comoro Islands. 



E. SULCIFERA, Morelet. PL 20, fig. 60. 



Superficially rimate, slightly plica tulate, shining, darkish horn- 

 color, suture slightly shortly denticulate, last whorl scrobiculate; 

 lip with parietal lamina, and a small tooth on the middle of the 

 right margin ; lip shortly expanded, constricted in the middle. 



Length, 4'5 mill. Comoro Islands. 



E. ORYZA, Morelet. PI. 20, fig. 61. 



Rimate, minutely costulate, shining, light fulvous ; aperture 

 with a parietal lamella, and a tooth on the right margin, lip 

 callous, a little expanded, exterior margin subsinuous. 



Length, 3-5 mill. Comoro Islands. 



E. CRASSILABRIS, Craven. PI. 20, figs. 50, 51. 



Perforate, opaque, yellowish white, finely closely obliquely 

 costulate ; aperture with a prominent parietal lamina, a strong 

 tooth on the outer margin, and a deep-seated columellar plica- 

 tion ; lip thickened, expanded and reflected, a pit behind the 

 labrum corresponding with the tooth within. Length, 11-5 mill. 



Leydenburg, Transvaal, So. Africa. 



E. INFANS, Craven. PI. 20, figs. 55, 56. 



Perforate, semitransparent, yello vish brown, glossy, obliquely 

 lirate, faintly spirally striate between the lirae, suture somewhat 

 denticulated ; aperture with a large, straight parietal lamella, 

 labrum with a strong tooth, and corresponding exterior depres- 

 sion ; lip white, expanded, reflected. Length, 5-5*75 mill. 



Leydenburg, Transvaal, So. Africa. 



More cylindrical and differing in the dentition of the aperture 

 from E. crassilabris. 



