Shell elongated, thick, high-spired, of 7-8 moderately convex whorls. Sculpture of spire whorls of very strong, slightly oblique axial ribs; on the body whorl, those ribs are abruptly interrupted; there is a thick cord running over the abapical end of the body whorl, separated from the ribs by a depressed spiral furrow. Aperture oval, with a thickened outer lip, smooth inside, and a broadly open, shallow notch at its abapical end.
whitish with a blurry brown suprasutural band, fading out on the body whorl.
common size :
This species is easily recognized by the deep furrow interrupting the ribs abapically, whereas in the native Rissoina bruguierei these ribs fade out gradually.
BIOLOGY / ECOLOGY