358 Mr. M. Connolly on 



Genus Subulina, Beck^ 1837. 



Suhulina taruensis, sp. u. (PL I. fig. 16.) 



Shell comparatively large, lanceolate^ imperforate^ thin, 

 smooth, shining, normally transparent, and olivaceous. Spire 

 much produced, sides nearly regular, apex mamillate. Whorls 

 12J, nearly flat, slowly and regularly increasing, with prac- 

 tically no basal margination ; the first 2 quite smooth, the 

 sculpture on the remainder, only visible under a strong lens, 

 consisting of close, straight, nearly vertical, transverse striae, 

 very faintly puckered just below the suture, which is simple 

 and shalloAv. Aperture subovate, peristome simple, acute; 

 outer lip straight in profile, receding to the base ; columella 

 concave, sharplv and abruptly truncate at base. 



Long. 22-3, lat. 4-3; apert., alt. 3-5, lat. 2*2 ; last whorl 

 6*7 mm. 



Hab. Kenya, Taru Desert [Percival); Uganda, between 

 Mbarara and Kigezi (Kemp). 



Although it hails from 600 miles westward, I am quite 

 unable to separate a younger and fresher shell from the 

 last-mentioned locality from the typical form ; it contains 

 10 whorls and measures: — Long. 17'7, lat. 3 9 ; apert., alt. 

 3' 3, lat. 2 1; last whorl 5 "3 mm. 



S. taruensis is easily distinguishable from most of the 

 genus by its slender form and short flat whorls. The 

 embryo contains 3 whorls, sculptured as described above^ 

 with markedly truncate columella. 



SiibuUna turtoni, sp. n. (PL I. fig. 24.) 



Shell of moderate size, elongate-turriform, imperforate, 

 thin, smooth, glossy, yellowish olivaceous. Spire produced, 

 sides regular, apex submamillate. Whorls 8, convex_, 

 rounded at the periphery, regularly and gradually in- 

 creasing, the first 2 or 3 smoothly microscopically punctate, 

 remainder sculptured with close, faint, regular, straight, 

 slightly oblique, transverse striae ; suture simple, rather 

 deep. Aperture irregularly rhombic, peristome simple, 

 acute ; outer lip moderately ontcurved, receding a little in 

 a straight line to the base ; columella short, inclined to the 

 left, rather obliquely, though decidedly, truncate at the 

 base. 



Long. 11-1, lat. 3-1 ; apert., alt. 2-8, lat. 1*6; last whorl 

 48 mm. 



The largest shell seen measures 15'2 x 39 mm. 



