Amphidromus contrarius

(Original description in Latin) The white shell is glossy, thinner and smaller than Amphidromus inversus (O. F. Müller, 1774). The shell contains sx sinistral whorls exhibiting transverse, fulvous, slightly undulate streaks and a double white spiral band, the lower band wider and interrupted. The apex is black. The aperture is ovate, white with translucent streaks. The parietal wall is yellowish. The outer lip is reflected and is pure white. The axis is narrowly perforate, the perforation partially obscured by a wide, adjacent lamella-like extension of the columellar lip, giving the appearance of being closed. The shell is umbilicate or perforate, sinistral, and oblong turreted, appearing thin but moderately solid, polished, and glossy, faintly striatulate above, and somewhat coarsely wrinkle-striate on the base. Its ground color is a pale flesh-tint, becoming white on the spire, and is flammulated with oblique purple-brown stripes that do not reach the suture above and are bisected by a yellow band (white on the spire) that revolves midway between the sutures, frequently having dark borders on the body whorl. The flames terminate abruptly at a wide yellow band that revolves below the periphery and is bordered above and below with narrow dark bands; a large flesh-colored basal area is present below this band. …