502 j\Ir. M. Connolly on 



Sul);;enus Raffraya, Bourguiguat, 1883. 

 Opens bocagei, Nol)re. 

 Einieii (ai/luri, Gibbons. 



Section Streptostfle, s. s. 

 Streptustele signata, sp. n. (PL XIV. fig. 1.) 



Shell of fair size, elongate-turnform, subrimate, thin, 

 silky, transparent, pale olivaceous. Spire produced, sides 

 almost regular, apex rounded. Whorls 9, not very convex, 

 regularly increasing, sculptured with close, regular, slightly 

 curved and oblique tiansverse stride, which commence very 

 faintly near the end of the second and are stronger, 

 especially in and for some di.stance below the sutures, on the 

 later whorls; suture little obli([ue, subcrenulate, well defined. 

 Aperture ovate, peristome almost imperceptibly thickened ; 

 outer lip almost straight in profile for ^ mm., and then 

 receding considerably to the base ; columella rather short, 

 slightly inclined inwards, margin very narrowly triangularly 

 reflexed, forming a minute rima; callus thin, transparent, 

 hardly perceptible; dentition none. 



Long. 11'7, lat. 3"6; apert., alt. 3"0, lat. 1*5; last whorl 

 5*3 mm. 



Hub. Camerun, Bitze (Bates). 



A rallnr variable species in both length and diameter of 

 Avhorl, the type being of intermediate proportions. It is 

 rather closely allied to <S. bucltholz'i, Mts., fVom Buea, but 

 the latter a])pcars to be a larger form. 



Streptosiele urguessensis, sp. n. (PL XIV. fig. 2.) 



Shell comparatively large, lanceolate, imperforate, trans- 

 parent, silky, pale olivaceous. Spire much produced, sides 

 almost straight, apex acute. Whorls 11, moderately convex, 

 very gradually increasing, first 2 sparsely microscopically 

 punctate, remainder covered with strong, close, regular, 

 almost straight, nearly vertical striae, weaker on the third 

 and coarser on the penultiuuite than on the other whorls ; 

 suture well defined, moderately oblique. Aperture sub- 

 piriform, peristome thickened and extremely narrowly 

 refiexed ; outer lip only very slightly angulate forward ; 

 columella short, a little concave, with a very small angular 

 twist at its upper extremity; callus pronounced ; dentition 

 none. 



Long. 13'5, lat. 3*2 ; apert., alt. 2-5, lat. 13 ; last whorl 

 J^'3 mm. 



Hab. KexNYa, Urgucss (Fercival) . 



