Flinders Top Shell. Shell very narrowly perforate, conical, rather thick; whorls seven to eight, planulate, the first eroded, the succeeding whitish-ashen, radiated with narrow, close and flexuous blackish and violaceous lines; spirally cingulate; lirae six on the penultimate whorl; last whorl subangular, a little depressed above, dilated in the middle; base convex, ornamented with eight lirae; aperture rhomboidal; lip simple; columella arcuate, truncate below. Height 16 mm., diameter 13 mm.

A series from Shark Bay agrees with the description and figure of the species. The holotype may be a little wider than the average specimen and there is a variation in the relative prominence of the peripheral carination of the body whorl. The umbilical, perforation is very narrow and almost, closed in some specimens.

South Australia