ACHATINA, EAST AFRICA. 39 



Length 143, diam. 64, aperture 60 x 40 mm. 



Length 190, diam. 94 mm. (Ussagara; fig. 4). 



Ussagara (Bloyet) ; Massai steppe, northeastward from 

 Ussandami (Langheld). Also farther north in the Uebi val- 

 ley above Guelidi, four days' march from Moguedouchou 

 (Mukdischu). Smaller specimens, only 10 cm. long, were 

 found by V. Bettego between Bardera and Brava. 



A. milne-edwardsiana REV., Bull. Soc. Malac. de France, 

 ii, p. 98, pi. 5 (1885). MARTENS, Ann. Mus. Civ. Geneva 

 (2), xv, 1895, p. 64; Moll. D. Ost-Afrika, p. 83. 



Remarkable for its great size, elongate form and relatively 

 small aperture with very arcuate outer lip, the short, oblique, 

 much curved columella, etc. According to Revoil, the snail 

 buries itself in the sand, leaving only the glossy apical whoris 

 sticking out. 



An example collected by Prof. Peters on the Querimba 

 Islands, on the coast of Mozambique, between Quiloa and 

 Mozambique, is very similar to this species. It has been 

 noticed as a white-mouthed panthera (cf. Martens, Mai. Bl., 

 vi, 1859, p. 214). Probably A. fulva Reeve, Conch. Icon., v, 

 pi. 3, fig. 10, is a small form of this species. 



38. A. MARIONI Ancey. 



Ovate-elongate, thick, solid, buff-whitish throughout, glossy, 

 very much granulated (except 2% earliest whorls). Spire 

 obtuse at the apex ; whorls 8, rapidly increasing, convex, the 

 last longer than the rest, rounded ; all but the earliest grannse 

 and decussate by irregular spiral and longitudinal stride, 

 which are especially impressed on the upper part of the last 

 whorl. Aperture simple, oval, truncate, lip not expanded or re- 

 flexed, the margins joined by a glittering and very thick 

 callous, the interior part pale buff. Length 113, diam. 66 

 mm. (Ancey). 



Elai country, between Brawa and Nyanza Ukerewe (Vic- 

 toria Nyanza) (Abdou-Raman-Gindi). 



A. marioni ANCEY, Le Naturaliste, iii, p. 414 (May 15, 

 1881) ; Bull. Soc. Malac. France, ii, p. 140. 



Only dead individuals have been collected, but white ap- 



