54 ACHATINA, EAST AFRICA. 



The original figure and description are given. It differs 

 from A. fulica chiefly by the broader contour and darker 

 last whorl. It is thicker and brighter colored than A. petersi 

 (glutinosa). 



The habitat of A. hamillei was unknown to Petit, who 

 thought it probably West African because the type was 

 found with a lot of A. marginata. The species was first 

 recognized in East Africa by Mr. E. A. Smith, who gives 

 the following description of the specimens from Usambara : 



A. hamillei Petit, var. PL 8, fig. 22. 



"Shell large, ovate, acuminate above; spire whitish, striped 

 obliquely with brown ; last whorl purplish, striped at inter- 

 vals and covered with an olive epidermis. Sculpture gra- 

 nose, consisting of coarse oblique lines of growth which are 

 very coarse beneath the suture, crossed by spiral impressed 

 lines. Whorls 8, moderately convex. Aperture inversely 

 subauriform, a trifle larger than the spire, bluish-white 

 within. Peristome thin, margined within with purplish- 

 brown. Columella thickened, white, not very arcuate or 

 contorted, somewhat abruptly truncated, united to the lip 

 above by a thickish white callosity." 



"Length 130 millims., diam. 62; aperture 69 long, 40 

 wide." 



Professor von Martens writes that the finest specimen 

 taken by Neumann (see above) agrees very well with Smith's 

 figure, but is somewhat larger and shows the oblique cal- 

 lous on the upper part of the columellar margin much 

 weaker. Those taken by Lieder agree nearer with Petit 's 

 illustration. 



48. A. CASTANEA Lamarck. PI. 15, figs. 7, 8, 9. 



Shell ovate, ventricose, very delicately striate, glossy; 

 chestnut-colored, the apex whitish, sutures margined with 

 a white line, the lip white within. Habitat unknown. My 

 cabinet. The upper half of the last whorl is a beautiful 

 chestnut, while the lower is a lighter red. Length 2 inches 

 8 lines (Lam.). 



