About Prothalotia pulcherrima (W.Wood, 1828)
Prothalotia pulcherrima (W.Wood, 1828) is a marine species. Adult shell length ranges between 12 mm and 20 mm. The shell is elongated, thick, solid, imperforate, and shaped like an acute cone. The spire forms a straight cone, and the apex is subacute. Sutures are linear, and there are approximately 6 nearly flat whorls. The penultimate whorl has four or five broad, flat spiral ribs that are often unequal in width, separated by narrow impressed grooves. The subangular body whorl has four or five broad, flat low ribs above its periphery, with more numerous narrower ribs on the base. The ribs are typically purplish-crimson, marked with narrow alternating white articulations. The small aperture is less than half the total length of the shell; it is oblique, oval, brilliantly iridescent, and somewhat grooved inside. The peristome is edged with a line of intense crimson, and has a greenish border on its inner side. The vertical columella is slightly arcuate, but straight along its middle section. The parietal wall is covered by a thin light callus. This marine species is endemic to Australia, where it occurs in waters off the coast from Victoria to Western Australia, and off Northern Tasmania.
