HELIX. 105 



H. ACHILLI, Bourg. PI. 22, figs. 44-46. 



Narrowly perforate, thin, subopaque, finely striated, whitish, with 

 numerous, narrow corneous bands ; whorls 6, somewhat convex, 

 moderately increasing, the last rounded, a little descending in front. 



Diam. 16 mill. 



Abyssinia. 

 H. ISSELI, Morelet. PI. 20, figs. 69, 70. 



Narrowly umbilicated, pellucid, brownish corneous, closely 

 strigate and opaquely multifasciate ; whorls 5-5i, convex, suture 

 deep, last whorl inflated, narrow. Diam. 15-18 mill. 



Bogos, Abyssinia. 



Var. MINOR. Less striate, brownish corneous, unicolor or sparsely 

 zoned. 



H. ZANGUEBARICA, Craven. PL 22, figs. 60-62. 



Conically turbinate, perforate, transparent, smooth, dark brown ; 

 whorls 4-5, convex, perforate. Diam. 3 mill. 



Magila, and Zanzibar Island, E. Africa. 



Perhaps this should have been included in the Zonitidse, as a 

 Conulus. 



H. ^ENEA, Krauss. PI. 20, fig. 71. 



Perforate, slightly, very closely costulate, thin, diaphanous, 

 brownish corneous, with a bronze lustre ; whorls 4, a little convex, 

 rapidly increasing ; columella dilated above into a triangular 

 blade. Diam. 9'5-12 mill. 



Natal, So. Africa. 

 H. BISCULPTA, Benson. PI. 20, fig. 72. 



Perforate, translucent, but little shining, brownish above, 

 corneous below, vertically striate and plicate, decussated by spiral 

 striae, suture deep ; whorls 4, convex, slowly increasing, the last 

 not descending, rounded, more convex below ; columella triangu- 

 larly dilated above. Diam. '7 mill. 



Cape of Good Hope. 

 H. PLANTI, Pfr. PI. 20, fig. 73. 



Perforate, thin, membranously costulate, and long haired, diaph- 

 anous, corneous; whorls 5, scarcely convex, slowly increasing, the 

 last not descending, subplane above, obsoletely angulated, base 

 convex ; columella dilated above. Diam. 10 mill. 



Natal, So. Africa. 



By a typographical error this species was first described as H. 

 Platti. 



