118 ARCHACHATINA. 



specimen, after Reeve; agreeing with Pfeiffer's original meas- 

 urements. Figs. 17, 18 on pi. 23 are a smaller individual sub- 

 sequently figured by Pfeiffer, which differs from the other in 

 markings and the red columella. The species is known only 

 by the works of Pfeiffer and Reeve. 



lla. Var. ADELINE Pilsbry, n. v. PL 20, figs. 4, 5. 



The shell is shaped like papyracea, much more slender than 

 knorrii. Early whorls roseate, the last two pale yellowish- 

 green, sparsely ornamented with deep chestnut flames, very 

 few of them reaching the suture above, widening downwards. 

 No subsutural tessellation. Surface smooth and glossy, very 

 weakly decussate. Aperture less than .6 the shell's length, 

 the columella short, narrow, quite concave and crimson. 

 Length 68, diam. 35, aperture 37 mm. 



West Africa (coll. A. N. S. P.). 



12. A. BAYOLI (Morelet). PI. 22, figs. 9, 10. 



Shell oblong-ovate, somewhat ventricose, rather solid, 

 closely striate and on the upper surface it is cut into oblong 

 granules by more spaced spiral striae, absent below the 

 periphery of the last whorl ; glossy, tawny-yellow, irregularly 

 marked with vivid dark brown streaks, flammules and dots, 

 widely spaced. Columella slightly arcuate, obliquely trun- 

 cate, of a bright purple color. "Whorls 6%, convex, the last 

 very obsoletely angular in the middle, longer than the spire. 

 Spire conoid, obtuse, the nucleus livid, smooth. Aperture 

 oval, pale lilac within, opaline, and showing the flammules 

 through. Peristome acute, thin. Length 66, diam. 30, aper- 

 ture 36x20 mm. (Morel.). 



West Africa: Assinie (coll. de 1'Ecole des Mines). 



Achatina bayoli MOREL., Journ. de Conchyl. 1888, p. 97, 

 pi. 1, f. 4. 



Related to A. papyracea, siderata, knorrii etc., especially 

 to papyracea; and like them, from the northern shore of 

 the Gulf of Guinea. 



13. A. KNORRII (Jonas). PL 20, figs. 1, 2, 3. 



Shell ovate, ventricose, decussate. Deeper rose-colored above, 



