ACHATINA, WEST APRICA. 33 



Achatina iostoma PPR., P. Z. S., 1852, p. 86 ; Conchyl. Cab., 

 p. 360, pi. 43, f. 7; Monogr., iii, p. 485. D'AILLY, Bihang, 

 p. 65. A. balteata v. MART., Monatsber. Berlin, 1876, p. 258, 

 pi. 2, f. 2 (living animal). 



A. iostoma is reported as locally abundant in Kamerun. I 

 do not know that the locality Fernando Po has been con- 

 firmed in recent years. It is apparently more lengthened 

 than A. balteata Reeve, and further differs somewhat in the 

 apparent absence of the remarkable surface wrinkles of that 

 form. I have not seen specimens. 



31. A. IN^EQUALIS Pfeiffer. 



Shell ovate-oblong, thin, irregularly painted with streaks 

 and flames of buff, fulvous and chestnut. Spire long-conic, 

 the apex obtuse; suture crenulate above, provided with a 

 pale crenulate cord on the last whorl. Whorls 7, a little 

 convex, the upper granulate-decussate, the last slightly longer 

 than the spire, somewhat wrinkled, obsoletely granulate at 

 the suture, somewhat tapering basally. Columella slightly 

 twisted, whitish, obliquely truncate. Aperture vertical, an- 

 gulate-oval, bluish inside; peristome unexpanded, the right 

 margin brown-edged. Length 78, diam. 38, aperture 42 x 21 

 or 22 mm. (Pfr.). 



West Africa: Fernando Po (Cuming coll.). 



A. inaqualis PFR., P. Z. S., 1855, p. 99; Monogr., iv, 601. 



Known to me by the original description only. It has not 

 been found on Fernando Po by later collectors. Its system- 

 atic position in the genus is uncertain. 



32. A. ALLISA Reeve. PL 35, fig. 17. 



Shell elongately oblong, somewhat cylindrical. Whorls 7, 

 obliquely finely granosely striated, finely crenulated beneath 

 the sutures. Aperture rather small. Columella arched, 

 slightly twisted, abruptly truncated. Olive-yellow, here and 

 there irregularly bedaubed with reddish chestnut blotches 

 (Reeve). 



West Africa: Cape Palmas, Liberia (Cuming coll.). 



Achatina allisa REEVE, C. Icon., v, pi. 5, f. 16 (Feb., 1849). 

 PFR., Monogr., iii, 489; iv, 603; vi, 218. 



