Shell ovate-elongate, thin, longitudinally regularly striate. Brownish-white, painted with lightning-like reddish streaks. Spire conic, the apex rather obtuse, regularly granulose with close concentric lines. Whorls 7,5, a little convex, the last about equal to the spire, decussate by distant impressed lines as far as the periphery. Columella nearly straight, abruptly truncate. Aperture oval-acute; peristome simple, unexpanded.
Length 58, diam. 28, aperture 30x16 mm. (Pfr.).
Length 55, diam. 23 mm. (Pfr., type).

This species, like A. pfeifferi, belongs to the sandy shore zone. It was described from Cuming's collection, and Reeve remarks that all of Mr. Cuming's examples "are distinguished by the same broken, interrupted style of painting."Pfeiffer describes a variety as larger, white, longitudinally streaked with fulvous; length 75, diam. 34 mm., from the Cuming coll.

West Africa: Loanda (Cuming coll.); Benguela (Dr. Tarns) ; sandy thickets of the district of Mossamedes, near Girdul, Benguela (Dr. Welwitsch).