African Nou-tnan'nc Motlusca, jO.'i 



^ Long. 130, lat. 3-0; apert., alt. 30, lat. I'O ; last whorl 

 5 2 n>m. 



Halj. Kenya, Mt. Kenaiigoi), Al)cr(lare Range {Kemp). 



The fine striation is sslightly more oblique and the shell 

 slightly more slender than that of .S'. oribaies, its nearest 

 ally; the whorls also increase slightly more gradually. 



•Strcpiualele va/idiur, sp. n. (PI. XIV. fig. 1 1.) 



Shell of fair size, lanceolate, subriraate, comparatively 

 solid, silky, translucent, pale olivaceous. Sj)ire produced, 

 sides almost regular, apex acute. Whorls lOi-, convex, 

 extremely gradually increasing, first 2 smooth, remainder 

 sculptured with close, regular, straight, vertical rib-striae, 

 extremely faint on the 3rd, but well marked and equal on 

 the later whorls; suture nearly horizontal, scarcely crenulate, 

 well defined. Aperture subrhombic, broadly rounded at 

 base ; |)eristome thickened, extremely slightly refiexed ; 

 outer lip curved outward just below the suture, advancing 

 very slightly in profile and then receding nearly as slightly 

 to the base; columella short, erect, margin triangularly 

 thickened and reflexed, nearly concealing the rimatiou ; 

 callus rather faint; dentition none. 



Long. 10-5, lat. 27 ; apert., alt. 1-8, lat. 1-3 ; last whorl 

 3 2 mm. 



Hub. Uganda, Mt. Elgon (ffood/iouse). 



A very distinct species, remarkable for its convex whorls 

 and short wide aperture. 



Streptostele sinuilabiata, sp. u. (PI. XIV. fig. 15.) 



Shell of fair size, elongate-turriform, subrimate, rather 

 thin, silky, nearly transparent, milky olivaceous. Spire 

 produced, sides very slightly convex at the 8th whorl, 

 apex mam mi Hate. Whorls 9, moderately convex, gradually 

 and regularly increasing, the first 2^ smooth, remainder 

 sculptured with close, rather coarse, regular, straight, 

 vertical rib-striie, which are slightly closer together on the 

 last whorl ; suture nearly horizontal, simple, well defined. 

 Aperture quadrate, broadly rounded at base; peristonu' 

 thickened, minutely refiexed ; outer lip hardly curved out- 

 ward, with an extremely faint inward curve at the angle at 

 which, after a short advance forward in profile, it recedes 

 rather sharply to the base ; columella short, thickened, 

 slightly concave, margin narrowly refiexed, forming a minute 

 rima ; callus pronounced ; dentition none. 



