Shell small, elongated, of 7-8 convex whorls, the first ones increasing regularly in diameter, then the two last ones constricted. Protoconch of two small, smooth whorls, teleoconch whorls with a sculpture of faint to moderate spiral cords, increasing in number from 4-5 on the early whorls to 9-10 on the part of spire preceding body whorl, crossed by rather conspicuous growth lines. Aperture pyriform, without thickening, the outer lip and columella joining together anteriorly to form a regular curved edge without any discontinuity.
whitish background, with spiral series of faint brown patches (2 on spire whorls, 3 on body whorl). Few specimens entirely brown.
common size :
2.4 to 4 mm.
This species is unmistakable, owing to the peculiar profile of the spire and the shape of the aperture broadly rounded abapically and lacking a siphonal canal. Only some species of Pyramidellidae may resemble it, but these are white and have a peculiar coiling of the protoconch whorls.
BIOLOGY / ECOLOGY
Larvae are planktotrophic, ensuring long-distance dispersal.
on sandy mud in shallow water.