olt) On African Non-inan'ne Molhisca. 



of Pilsbrv's species, although the localities are somewhat 

 distant from that in which /essensis was found and from each 

 other. They agree so closely in sculpture and dimensions 

 with Pilsbry's description of lessensis that they can hardly 

 be varictally distinct, but their spire has a more graceful 

 appearance than in his enlarged figure, agreeing better in 

 this respect with his fig. 15, V^. snbvaricusa, Mts , than with 

 lessensis. The columella is adnately thickened, so that in 

 most cases any rimation is completely obscured ; in the 

 shells from Abiri close microscopic spiral sculpture is plainly 

 visible in patches on most of the whorls and more faintly on 

 the base, but this feature is probably due to their fresh con- 

 dition rather than to specific distinction. 



Varicostele curvicolumella, sp. n. (PI. XIV. fig. 31.) 



Shell of moderate size, elongate-turriform, imperforate, 

 thin, silky, transparent, pale olivaceous. Spire produced, 

 sides regular, apex rounded. Whorls 7, convex, gradually 

 increasing, the first 2 microscopically punctate, remainder 

 sculptured with close, faint, regular, almost straight, scarcely 

 oblique strise ; suture simple, nearly hoiizontal, well defined. 

 Aperture shortish ovate, peristome simple, outer lip rathei- 

 curved outw ards, gradually receding in profile to the base ; 

 columella inclined inwards from the base, very slightly 

 thickened as it ascends ; callus hardly noticeable ; dentition 

 none. 



Long. 7-9, lat. 2*7; apert., alt. 2*2, lat. 1-3; last whorl 

 3-8 mm. 



Hab. Uganda, Jinja {Kemp). 



Differs from both the foregoing species in sculpture, the 

 striae being fainter and wider apart, and in having sliorter, 

 more convex, whorls. 



EXPLANATION OF PLATE XIV. 



Streptostele signata, Connolly. 



uri/iiessensis, Uounully. 



fallooni, Counolly. 



kenyana, Connolly. 



liuffrdi/a cuniatit, Connolly. 



clara, Connolly. 



anrifonnis, Connolly. 



Fiy. 8. Streptostele oribates, Connolly. 



Fi(j, 9. eUjonexsis, Connolly. 



Fig. 10. e/onr/ata, Connolly. 



Fiy. 11. validior, Connolly. 



Fiff. 12. GulelluJilLv, Connolly. 



Fit/. 13. Pii/chotrema cedrorum, Connolly. 



