Shell ovate, rather tumid, a little attenuate towards the apex, thin. Whorls 8, the apical unicolored, simple, the rest rather swollen, the upper whorls and upper half of the lowest being minutely granular, these granules being very small and regular; below the middle the last whorl is smooth and beautifully suffused with bright chestnut brown; the ground-color of all the whorls is pale straw, but they are ornamented with longitudinal, dark brown, zebra-like mark¬ings. The aperture is oblong, within bluish, outer lip thin. Length 63, diam. 31 mm.

This form seems to be very similar to A. schinziana Mousson, but the figure differs in showing a longer aperture and wider columella.

West Africa: Old Calabar Nigeria