494 Ml. M. Connolly on 



impressed, incrcasinfj in obliqueness Avitli eacli whorl. 

 Aperture irregular, peristome tliickencd, slightly reHexed at 

 the base and more so on the columella, but not forming a 

 rima; outer lip strongly curved outAvard and forward below 

 the suture, an<l then considerably incurved before descending 

 almost vertically to the base; dental process three-fold: — 

 a broadly rounded, rather deep-set protuberance high on the 

 columella; a small, sharp mid-parietal plait and a broad, 

 bluntly pointed swelling, corresponding to a deep external 

 depression, on the inward curve of the outer lip ; there is 

 a slight callus. 



Long. 3'4, lat. 0*9 ; a[)ert., alt. 1-0^ lat. circa 0*4; last 

 whorl 1*5 mm. 



Hub. Kenya, Eusso Nyiro (Kemp). 



A beautiful little species with the form of a Raffraya, but 

 the dentition of a Guhlla. It was distiibuted by Preston 

 und r a Latin name recalling its resemblance to a column, 

 which is too near that of other species to be retainable. It 

 differs from the figure of G. jilicusta (Morelet) in its parietal 

 plait pointing downwards to the right instead of to the left, 

 and its coluinellar fold being deep-set at the upper angle of 

 the columella, whereas in filicosta it is situate halfway up 

 near the margin. 



Guldla impedita, sp. n. (PI. XIV. fig. 33.) 



Shell very small, acuminate-ovate, rimate, thin, silky, pale 

 olivaceous. Spire moderately produced, sides convex, with 

 the greatest circumference at the 6th whorl, apex bluntly 

 rounded. Whorls 7^, rather convex, very slowly increasing, 

 the first 2| smooth, remainder sculptured with regular, 

 rather close, slightly oblique lira?, curved on the 3rd and 

 sinuous on the later whorls, very slightly more distant on 

 each succeeding whorl, about 23 being visible from the front 

 of the 6th : suture simple, impressed. Aperture subreni- 

 forra J peristome reflexed, white, continuous, slightly angulate 

 at the meeting of paries and columellar margin ; columella 

 concave, rima deep ; dentition consisting of an incurved 

 lamella on the right centre of the paries, w^hieh merges from 

 that point into the sinus ; a triangular tooth, pointed at its 

 upper extremity, corresponding to a deep and lengthy 

 external depression, at the base of the sinus ; and a broad 

 fold, ridged and bluntly pointed, too deep-set on the 

 columella for its full details to be perceptible; the basal 

 tooth is represented by an inconspicuous inrunning ridge, 



