14 ACHATINA, WEST AFRICA. 



West Africa: Leopoldville, in clearings in the forest (E. 

 Dupont) . 



Achatina oblitterata DAUTZ., Bulletins de 1'Academie Roy- 

 ale des Sciences, des lettres et des Beaux-arts de Belgique 

 (3), xx, no. 12, p. 567, pi. 1, f. 1 (1891). A tincta var., 

 PFB., Malak. BL, xvi, 1869, p. 256, pi. 2, f. 1-4. 



This shell belongs to the same group as A. tincta Reeve, 

 and is very closely related to that. The sculpture is the 

 same ; the shape is a little more swollen, less slender ; but the 

 chief difference is in the coloration. In A. oblitterata the 

 longitudinal flammules are inconspicuous or disappear at the 

 periphery of the last whorl, while in A. tincta, on the con- 

 trary, these flammules are very dark colored, almost black, 

 and increase in intensity towards the base. Moreover, in 

 A. oblitterata the columella and callous are of a bright rose 

 color, while these parts are milky or bluish-white in A. tincta. 



Pfeiffer received this form with A. tincta and figured 

 specimens in 1869. He notes that it is a thicker shell than 

 A. tincta, and varies from indistinctly flammulate to almost 

 uniform brownish-yellow (pi. 19, figs. 24, 25). 



6. A. STUDLEYI Melvill & Ponsonby. PI. 40, fig. 4. 



Shell ovate, rather tumid, a little attenuate towards the 

 apex, thin. Whorls 8, the apical unicolored, simple, the rest 

 rather swollen, the upper whorls and upper half of the 

 lowest being minutely granular, these granules being very 

 small and regular ; below the middle the last whorl is smooth 

 and beautifully suffused with bright chestnut-brown; the 

 ground- color of all the whorls is pale straw, but they are 

 ornamented with longitudinal, dark brown, zebra-like mark- 

 ings. The aperture is oblong, within bluish, outer lip thin. 

 Length 63, diam. 31 mm. (M. & P.). 



West Africa: Old Calabar (T. Studley). 



Achatina studleyi M. & P., Proc. Malac. Soc. London, ii, 

 p. 291, fig. in text (November, 1897). 



"This is a most distinct and beautiful species, though in 

 many ways similar to the Natalese A. semigranosa and A. 

 granulata Pfr. Mr. Layard says it is common in the dis- 



