It has a slightly reverted and narrowly thickened lip and a thin edged twisted columella, the point of which runs out into a bluntly mucronated angle.

The colorof the shell is delicate yellowish, with a horny translucency and exquisite iridescence, which under the lens appears brilliant.

The columella is spread out at its base as a confined, flattened, unevenly inclined, semicircular, iridescent umbilical pad.

From the left corner of which the columella proper projects, it has a narrow but rounded edge, twisted, straight, bending to the left, and advances into a sharply angulated, and, as seen from behind, even mucronated junction with the basal aperture edge, to which the umbilical pad curving round the back of the pillar also attains.

The umbilical pad is defined by a narrow furrow, and in front by a slightly tumid ridge, which is the least nacreous part of the whole shell.