112 ARCHACHATINA. 



Peristome simple, thin. Length 65, diam. 35, apert. 38 x 22 

 mm. (P/V.). 



Habitat unknown. Type from Mus. Cuming. 



Achatina ovum PPB., Malak. Bl. v, 1858, p. 238; Novit. 

 Conch, p. 154, pi. 40, f. 3, 4 (A. orum on plate) ; Monogr. 

 vi, p. 215. 



Known by the unique type only. It is marked externally 

 like A. rhodostoma Phil. 



4. A CUMINGII (Shuttleworth). 



Shell ovate-oblong, solid, striate, obsoletely decussate with 

 punctate lines. Under the cuticle it is whitish-yellow, orna- 

 mented with broad brown or blackish-chestnut stripes, con- 

 fluent at the base of the last whorl. Spire ovate, the apex 

 obtuse, roseate. Whorls 6, a little convex, the last nearly 

 five-eighths the total length, slightly inflated, the suture mar- 

 gined. Oolumella arcuate, rose-tinted basally, obliquely 

 truncate. Aperture semioval, pearly inside; peristome sim- 

 ple, unexpanded, somewhat thickened, the margins joined by 

 a glossy whitish callous. Length 77, diam. 40, aperture 

 40x26 mm. (Shuttl). 



West coast of Africa (Cuming). 



Achatina cumingii SHUTTL., Mittheil. der naturf. Ges. Bern, 

 1852, p. 201. PFR., Monogr. iii, p. 482. 



Two specimens examined. It is related to A. sutnralis 

 Phil. (A. marginata var. columella rosea of authors), but is 

 more slender, the columella is more arcuate and the shell much 

 less inflated. (Shuttl.). 



5. A. GREVILLEI (Pfeiffer). 



Shell ovate-oblong, solid, striatulate, olivaceous-buff' under 

 a thin brownish cuticle. Spire conic, obtuse ; suture crenulate 

 widely impressed-marginate. Whorls 6 to 7, the upper very 

 minutely decussate, last whorl longer than the spire, nearly 

 smooth, obsoletely angular at the periphery. Columella some- 

 what twisted, purple, narrowly truncate. Aperture slightly 

 oblique, angulate-oval, pearly- whitish within; peristome thin, 

 a little expanded, the margins joined by a purple callous, 



