360 Mr, M. Connollj on 



Genus Subuliniscus, Pilsbry, 1919. 



Subuliriiform shells with spirally striate, acutely conoid, 

 apical whorls. \ 



Subulmiscus adjacens^ sp. n. (PI. I. fig. 12.) 



Shell comparatively large, acuminate-turriform, imper- 

 forate, thin, smooth, glossy, transparent, olivaceous. Spire 

 produced, sides nearly regular, apex acute. Whorls 10, 

 not very convex, gradually and regularly increasing, without 

 basal margination ; first 1^ worn in the type and sparsely 

 malleate, the sculpture of the remainder, under a strong 

 lens, consisting of close, regular, nearly straight, slightly 

 oblique, transverse strise, chiefly visible just below the suture, 

 and extremely close, regular, slightly undulating spiral 

 striation, covering the transverse strise and becoming plainer 

 on each succeeding whorl ; suture simple, moderately 

 oblique, well defined. Aperture ovate, peristome simple, 

 acute, outer lip straight in profile, receding a little to the 

 base ; columella slightly concave, abruptly, though not very 

 noticeably, truncate at its extreme base. 



Long. 22'3, lat. 5'7 ; apert., alt. 5'7, lat. 3*1 ; last whorl 

 9*6 mm. 



Hah. Kenya, Larogi Hills (Percival). 



This species appears to vary considerably in strength of 

 sculpture, both the spiral and transverse striation being 

 sometimes much fainter than as described above, in shells 

 coinciding in all other respects. 



Subuliniscus nyiroensis, sp. n. (PI. I. fig. 14.) 



Differs from S. adjacens in having very shghtly more 

 convex and longer whorls and in the apparent absence of 

 spiral sculpture, except on the second whorl, on which there 

 is a faint appearance, under a strong microscope, of distant, 

 feather-formed, spiral lines ; the transverse strise, also, are a 

 little fainter, and slightly more puckered below the suture. 

 The shell contains 8 whorls, and measures : — 



Long. 18*3, lat. 5*2 ; apert., alt. 4*9, lat. 2*8 ; last whorl 

 8' 7 mm. 



Hub, Kenya, Mt. Nyiro, 8300 ft. {Percival). 



Subuliniscus marsabitensis^ sp. n. (PI. I. fig. 13.) 



Very similar to S. adjacens, from which it differs chiefly 

 in having noticeably shorter whorls ; the spiral sculpture, 

 also, is far fainter, being almost absent on the three earlier. 



