neio SlieUs from British East Africa. 465 



Alt. 10 75, diam. maj. 5'5 mm. 

 Aperture: ak. 2-5, diam. 2 min. 



Hah. Mount Kenia, at an altitude of 6000-8000 feet, 

 British East Africa. 



Ennea pilula, sp. n. (Fig. 5.) 



Shell ovate, imperforate, solid, yellowish white, slightly 

 ]iolished; wlioils 7^, the apical wliorls exserted, smooth, the 

 third, fourth, and fifth gradually increasing, the sixth and 

 seventh flat and about of the same breadth, all the later 

 whorls from the beginning of the third onward sculptured 

 with transverse arcuate stria?, which become obsolete on the 

 middle and lower portions of the last whorl, the last whorl 

 tri-strangulate behind the labrum ; suture linear ; umbilical 

 area presenting a shallow elongate depression ; columella 

 almost vertically descending ; labrum white, thickened, 

 broadly expanded, reflexed, a coarse white parietal callus 

 joining the margins; aperture roughly quadrilateral, armed 

 with a coarse, broad, bifid, reflexed, subi)arietal lamella, 

 below which occur on the inner margin of the outer lip three 

 l)laits, the upper of which forms a canal with the subparietal 

 lamella; below these and at the base of the aperture occurs 

 a fourth plait, and above this on the columella are situate 

 three more plaits, of which the middle one is the strongest, 

 and again above these two denticles. 



Alt. 11*25, diam. maj, G'5 mm. 



Aperture : alt. 2'5, diam. 1'75 mm. 



Hab. Mount Keyia, at an altitude of 6000-8000 feet, 

 British East Africa. 



Ennea preiiosa, sp. n. (Fig. 6) 



Shell ovate, rimate, thin, whitish when in dead condition ; 

 whorls 7, the first four rapidly increasing, the sixth the 

 largest, apical whorl smooth, the remainder sculptured with 

 distant, thin, erect, transverse costulffi, between which occur 

 coarse transverse striae; suture rather deeply impressed; 

 umbilicus wide above, suddenly becoming very narrow and 

 deep below ; labrum almost continuous, white, expanded, 

 reflexed, folded above, and turned downwards into a strong, 

 parietal, obtusely angular lamella, bearing a nodule on either 

 side of the angle ; ap rture irregularly ovate, armed with a 

 short, lamelliform tubercle on the outer li|); a broad, basal 

 denticle, above which occur two denticles, on the columella, 

 of which the lower is the larger. 



Ann. & Mag. N. Hist. Ser. 8. Vol vii. 31 



