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). 



