Shell ovate-turrite, subfusiform, rather thin, glossy, lon-gitudinally plicatulate-striate; sooty, darker below, orna¬mented with wavy or angular blackish stripes. Spire turrite, the apex subacute; suture crenulate, pale-margined. Whorls 7,5, moderately convex, the early ones more or less granulate, the last tapering downwards, three-sevenths the total length. Columella nearly straight, violaceous-brown, reaching nearly to the base. Aperture oblong semioval, purple-black and pearly within. Peristome thin and unexpanded. Length 55, diam. 20 mm.; aperture 23 mm. long, 10 wide.
A species of long, slender contour and dark coloration. Spiral striae are wholly wanting in some individuals, and when present they rarely pass beyond the penult, whorl.

Angola. District of Ambaca, near the cavern Purica-carambola.