SUBULINA, EAST AFRICA. 89 



ish or yellowish-green, polished. "Whorls 9, a little convex, 

 slowly increasing, very lightly striate with growth-lines, 

 separated by an oblique, rather deep suture. Apex obtusely 

 rounded. Aperture small, oval, acute above, slightly exceed- 

 ing one-fifth the total length. Columella quite arcuate, ob- 

 liquely truncate in front, covered with a thin white callus. 

 Length 16, diam. 3.66, aperture 3.25 x 2 mm. (Smith). 



Mamboya, 4-5000 ft. elevation (Last). 



Stenogyra (Subulina) emini SM., Ann. and Mag. N. H. 

 (6) vi, p. 159, pi. 5, f. 19. 



"This species bears a general resemblance to S. stricta 

 Poey, from Cuba, but differs in having much rounder whorls, 

 a more arcuate columella, with a distinct basal truncation. 

 S. lasti is differently colored and has shorter and more nu- 

 merous whorls. S. mammillata Craven is a larger species 

 with a strongly puckered suture.' 7 (E. A. Smith). 



24. S. PERSTRIATA Martens. PI. 14, fig. 39. 



Shell turrited, closely covered with vertical rib-striae, whit- 

 ish, lusterless, with obtuse apex. Whorls 8%, the first small, 

 rather globular, scarcely projecting, but distinctly striate; 

 the second and third of about equal breadth, the following 

 whorls regularly and slowly increasing in width, somewhat 

 convex, with a moderately deep suture ; the last whorl roundly 

 tapering below. Aperture rather oblique, one-fourth the 

 total length, rounded-oval, the outer lip thin, arcuate, the 

 columellar margin rather thin, weakly arcuate, distinctly 

 twisted, very oblique below, and weakly truncate, above pass- 

 ing into a distinct callous deposit on the parietal wall. 

 Length 24%, diam. 6, aperture 5.66 x 3.5 mm. (Marts.) 



Migere in Butumbi, in forest mould. <(Stuhlmann). 



S. perstriata MARTS., Nachrbl. 1895, p. 184; Beschalte 

 Weichthiere p. 122, pi. 5, f. 24. 



On first glance similar to the West African S. striatella 

 Rang, but well distinguished by the sculpture of the apex; 

 moreover it is larger with fewer whorls, and comparatively 

 less slender. It might be nearest allied to solidiuscula and 

 lenta, but both of these are notably larger. (Marts.) . 



