64 ACHATINA, EAST AFRICA. 



convex, the upper three pale, smooth, the two following gra- 

 nose sculptured with growth-lines decussated by spiral striae; 

 last whorl large, inflated, scarcely granulose below the middle, 

 ornamented with strong, oblique, curved growth-lines. Aper- 

 ture inversely auriform, sky-blue, glossy. Columella slightly 

 arcuate, thin, covered with a very thin callous, narrowly 

 truncate in front; lip very thin, black-margined. Length 

 75, diam. 43, aperture 47x26 mm. (Smith). 



British Central Africa: Nyika Plateau, 6,000-7,000 ft. 

 elev. (Sir Harry Johnston). M'bwe and Ufipa country 

 (Mgr. Lechaptois). 



A. fragilis SMITH, P. Z. S., 1899, p. 591, pi. 25, f. 3, 4. 

 ANCEY, Journ. de Conch., 1902, p. 278, fig. 6. 



''This species is remarkable on account of its extreme 

 thinness and lightness. Some specimens are uniformly yel- 

 lowish-olive, with here and there a darker stripe, marking 

 a period of growth, whilst others, having the same ground- 

 color, are ornamented with numerous oblique and slightly 

 wavy red stripes. These either extend the whole length of 

 the body-whorl, or occasionally disappear upon the lower 

 half. The somewhat coarse regular granulation ceases at a 

 little above the middle, but a few transverse striae, not suffi- 

 cient to form a regular granulation of the surface, are 

 traceable below" (Smith). 



Group of A. craveni. 

 57. A. GLAUCINA 'Ancey' Smith. PL 8, figs. 19, 20. 



Shell ovate-fusiform, yellowish or reddish, unicolored or 

 sometimes obscurely painted on the upper part of the spire 

 with oblique, wavy rufous streaks. Spire conic, obtuse at 

 the apex, the sides a little convex. Whorls 8, slowly in- 

 creasing, a little convex, the upper ones very smooth, the 

 rest granulated, the granulation more or less obsolete below 

 the middle of the last whorl. Aperture glaucous or blue- 

 whitish, scarcely half the total length in adult shells, in- 

 versely ear-shaped, columella white, lightly twisted, narrowly 

 and obliquely truncate. Length 66, diam. 29, aperture 30 x 

 16 mm. (Smith). 



