508 Mr. M. Connolly on 



the first 2^ practically smooth, remainder hearing extremely 

 faint, almost flat, regular^ transverse stritc, almost invisible 

 on the smooth whorls, but strongly accentuated in the 

 sutures, which are nearly horizontal, crenulate, and well 

 defined. Aperture snbovate ; peristome simple, acute ; 

 outer lip not much curved outward, straight in profile, 

 slightly receding to the base ; columella vertical, margin 

 slightly reflexed, forming a minute rima ; callus and 

 dentition none. 



Long. 8-2, lat. 2'1 ; apert., alt. 1-8, lat. O'S; last whorl 

 2-8 mm. 



Hab. Kenya, Forests north of Mt. Kenya {Percival). 



Compares very closely with the enlarged figure of 

 S. zambiensjs, Pilsbry, whose sculpture appears to be similar. 

 The last-uamed, however, is 3^ mm. longer with the same 

 number of whorls, so is obviously an altogether larger form. 

 The sculpture — or, rather, want thereof, except in the suture 

 — is very remarkable, and distinguishes S. crassicreniilata 

 from neighbouring species which resemble it closely in other 

 respects. 



Streptostele patruelis, sp. n. (1^1. XIV. fig. 22.) 



Shell of moderate size, rimate, torpediniform, thin, 

 smooth, dull in the type, but normally transparent and pale 

 olivaceous. Sjiire produced, sides nearly parallel from the 

 base to the 8th whorl and then gradually tapering to 

 the acute apex. ^Vhorls 10, rather flat, regularly and 

 very gradually increasing, first 4 sparsely microscopically 

 punctate, remainder sculptured with extremely faint, close, 

 nearly straight, moderately oblique, transverse striae, haidly 

 visible except in the suture, which is neaily horizontal, 

 crenulate, and shallow. Aperture subovate, peristome simple, 

 outer lip very little curved outward, almost straight in 

 profile, only receding very little toward the base ; columella 

 very slightly concave, margin narrowly reflexed, forming a 

 clear rima ; callus very faint ; dentition none. 



Long, 8'6, lat. 2*4; apert., alt. 1*7, lat. 1*1 ; last whorl 

 3 mm. 



Hab. Kenya, Larogi Hills (Percival). 



Clearly distinct in shape from the preceding species, which 

 it somewhat resembles in sculpture. 



Streptostele nyiroensis, sp. n. (PI. XIV. fig. 23.) 



Shell comparatively large, elongate-turrifbrm, subrimate, 

 thin, silky, semitransparent, pale olivaceous. Spire con- 

 siderably produced, slightly bent to the right, apex acute. 



