108 HELIX. 



ft 



5, convex, the last not descending, inflated ; aperture subpearly, 

 base of lip slightly thickened. Diam. 17 mill. 



Cape of Good Hope. 



H. TOLLINI, Albers. PL 21, figs. 92-94. 



Covered subperforate, thinly striated, very lightly decussated by 

 spiral striae, a little shining, diaphanous, brownish corneous, suture 

 impressed, submargined ; whorls 5, a little convex, the last rounded, 

 not descending. Diam. 12-14 mill. 



Table ML, Cape of Good Hope. 



H. MENKEANA, Pfr. PL 21, fig. 98. 



Perforate, depressed, more convex below, somewhat thin, smooth, 

 white, with 1-5 brown bands, the upper one wide, epidermis light 

 corneous, diaphanous, suture moderately impressed ; whorls 4, 

 scarcely convex, rapidly enlarging. Diam. 18 mill. 



Cape of Good Hope. 



H. SYMMETRICA, Craven. PL 21, fig. 99. 



Imperforate, vitreous, semitransparent, light olive green, dull 

 glossy below and within the aperture, with growth lines and faint 

 spiral striae ; whorls 4, convex, the last equalling the others in 

 breadth, suture rather deep. Diam. 16 mill. 



Leydenburg, Transvaal, So. Africa. 



H. CYCLARIA ? Morelet. PL 21,figs. 95-97. 



Subperforate, thin, regularly costulate-striate, shining, light 

 fulvous, suture subchanneled ; whorls 5J, somewhat convex, the 

 earlier ones slowly increasing, the last tumid, narrow, with dilated 

 and convex base. Diam. 22 mill. 



Mauritius. 



Unfigured Species. 



H. CONDENMOYI, Nevill. Mauritius. 



H. PISOLINA, Gould. Cape of Good Hope. 



H. HUDSONI^E, H. OMPHALION, H. CHARYBDIS, H. BROWNTNGII, 

 H. PRIONACRIS, Benson. Cape of Good Hope. 



H. AFRICA, Brown. Great Brakke, So. Africa. 



H. CONGELLANA, and H. ROSERI, Krauss. Cape of Good Hope. 



