ACHATINA, EAST AFRICA. 69 



Whorls 8, scarcely at all convex, the last strongly descending 

 to the aperture. Aperture nearly vertical, rounded-quad- 

 rate, somewhat less than half the shell's length, pale bluish 

 within. Columellar margin rather vertical, weakly thick- 

 ened, blue-white, broadly truncate below. Length 118, diam. 

 52, aperture 58x32 mm. (Mart.). 



West of the upper Ituri river at Kibilibissi, in forest 

 (Stuhlmann). 



A. stuhlmanni MARTS., Sitzungsber. d. Ges. naturf. 

 Freunde, 1892, p. 176; Beschalte Weichthiere D. Ostafr., 

 p. 92, pi. 4, f. 9. 



64. A. RANDABELI Bourguignart. PL 13, fig. 42. 



Shell oblong, moderately swollen, exactly glandinifonn, 

 rather thin, subpellucid, rather glossy, sharply decussate 

 ( the upper whorls and lower half of the last smooth) ; some- 

 what olivaceous-chestnut, irregularly scattered with reddish 

 fiammules, lightly fulgurate and interrupted. Spire obtuse 

 acuminate, at the summit obtuse, the apex rounded. Whorls 

 8, a little convex, rather slowly increasing, separated by an 

 impressed suture ; the last whorl oblong, rather swollen, more 

 than half the total length. Aperture long-oblong, acutely 

 angular above. Peristome unexpanded, acute. Columella 

 straight, abruptly truncate. Callous inconspicuous. Length 

 55, diam. 28, aperture 31x15 mm. (Bgt.). 



Neighborhood of Tabora, Unyanyembe. 



A. randebeli BGT., Moll, de 1'Afrique Equatoriale, p. 84, 

 pi. 5, f. 6 (1889). MARTENS, Beschalte Weichthiere, p. 92. 



65. A. THOMSONI E. A. Smith. PL 11, fig. 34. 



"Shell moderately solid, elongate ovate, beneath a yellow 

 epidermis whitish, striped with blackish-brown. Spire some- 

 times purplish-red or whitish, more or less worn, and in 

 consequence, to a certain extent, lacking the striping; the 

 latter is, as a rule, rather regular and only a little wavy. 

 Whorls 7, a Little convex, striated by the lines of growth, 

 covered by a thin yellow epidermis, which is beautifully 

 sculptured with most minute stria? in a crisscross fashion, 



