ARCHACHATINA. Ill 



-,/. Var. GRACILIOR v. Martens. 



Without violet markings; less distinctly striated spirally, 

 the striae frequently broken into granulation; basal margin 

 of the lip less deeply arcuate. Columella intense rose or 

 reddish golden, the summit of the shell similarly colored. 

 Length 101, diam. 50, length of mouth 60 mm. Type from 

 "Axim, in South Africa," Albers coll. Also reported from 

 Kamerun by d'Ailly. 



The status of this form requires further investigation. 



2b. Var. SUBSUTURALIS Pilsbry, n. n. PI. 25, fig. 25. 



Ovate-conic, rather thick, decussate-granulate in the upper 

 whorls, the last one very smooth; purple at the apex, then 

 white, under a tawny-buff cuticle, ornamented with close, 

 narrow, wavy chestnut streaks. Spire conic, rather acute; 

 suture margined, scarcely crenulate. Whorls 7, a little con- 

 vex, the last much exceeding the spire in length. Columella 

 callous, purple, shortly and abruptly truncate. Aperture 

 ovate-oblong, white inside ; lip blackish within, unexpanded, 

 arcuate below. Length 42, diam. 26 lines (Phil.). 



Bulla achatina var. marginata DONOVAN, Naturalist's Re- 

 pository v, pi. 149 (1827). Achatina suturalis PHIL., Abbild. 

 iii, p. 29, Achatina pi. 2, fig. 1 (April, 1849). Not Achatina 

 suluralis Pfr., 1848. A. niunji-iiaia Sw., REEVE, Conch. Icon, 

 v, pi. 4, f . 14. 



Philippi 's figure, which I have copied, represents a shell not 

 fully mature. The race is chiefly characterized by its red 

 columella. Cf. var. gracilior. 



3. A. OVUM (Pfeiffer). PL 24, figs. 20, 21. 



Shell ovate, thin, smooth, tawny-buff painted with narrow 

 reddish streaks, frequently interrupted and maculose. Spire 

 conic, flesh-colored above, obtuse; suture widely margined. 

 Whorls 6, a little convex, the upper ones minutely granulate 

 under a lens, the last a little longer than the spire, ventricose. 

 Columella orange flesh-colored, arcuate-twisted, slightly trun- 

 cate below. Aperture ample, slightly oblique, broadly angu- 

 late-oval, colored within like the outside, somewhat pearly. 



