12 ACHATINA, WEST AFRICA. 



Congo Free State: Upper Congo (Capt. Weyns, in Mus. 

 1'Etat Independant) . 



Achatina weynsi DAUTZ., Ann. Soc. Roy. Malac. Belg., 

 xxxiv, Seance du 2 Dec., 1899, p. 27 (1900). 



Remarkable for its beautiful coloration. It differs from 

 A. kraussi by the less high last whorl, shorter, more perpen- 

 dicular and less arcuate columella, non-crenulate suture, or 

 with the crenulation extremely weak, and by the distinct and 

 more angular flames. It is smaller than A. tincta, more oval, 

 less turrited, the columella especially narrower, and the sur- 

 face finely sha greened, while that of A. tincta is entirely 

 smooth. A. ~buchneri Mart, also has some resemblance to 

 A. weynsi, but its spire is larger, more conic, and the sur- 

 face is wholly covered with fine, regular granulation, while 

 A. weynsi is irregularly shagreened and more glossy. The 

 coloration is also quite diverse. (Dautz.) . 



4. A. TINCTA Reeve. PI. 18, figs. 21, 22, 23. 



Shell oblong-ovate, rather thin; whitish, vividly colored 

 with large longitudinal spots, covered with a yellowish 

 cuticle. Spire a little elevated, the apex obtuse, roseate. 

 Aperture oblong, white. Length 3.3, diam. 1.5 inch. Mus. 

 Cuming, Stainforth. The Achatina tincta has a white shell 

 covered with a yellowish epidermis, and it is singularly 

 stained in a longitudinal direction with a deep morone 

 [maroon] color. The stains take the form of bands in some 

 places, but exhibit no degree of regularity (Reeve). 



West Africa: Angola (Fr. Rois Batalha). Leopoldville 

 Congo, numerous in clearings (E. Dupont). 



Achatina tincta RVE., P. Z. S., 1842, p. 55; Conch. Syst., 

 ii, pi. 179, f . 18 ; Conch. Icon., v, pi. 11, f . 29. PFR., Monogr., 

 ii, p. 252; iii, 488; iv, 603; vi, 217; Malak. Bl., xvi, 1869, 

 p. 253, pi. 1, f. 1-4. DAUTZENBERG, Bull. Acad. Roy. Sci. 

 Belg. (3 ser.), xx, p. 567 (1891). A. mauritiana POT. ET 

 MICH., Galerie des Moll, du Mus. de Douai, i, p. 129, pi. 11, 

 f. 11, 12 (exclusive of references and locality). 



Pfeiffer gives the following diagnosis of the type speci- 

 men, the figure of which is copied on pi. 17, fig. 23: Shell 



