Description (Gittenberger et al, 2000):
Shell: Very fragile, elongate-conical, creamy white; reaching 17 mm in length. Length/width 1.2-1.4-1.6. Protoconch whorls 3. Protoconch with numerous very fine, incised, axial lines. Maximum protoconch 1 diameter 0.12-0.13 mm (n=2). Teleoconch whorls up to 9, straight-sided, separated by a shallow suture. Teleoconch sculpture of unevenly spaced, fine, orthocline, more or less obsolete costae, not or only in part lamellate, and numerous low spiral threads that are separated by interspaces that vary from as wide as the spiral threads to three times as wide. Costae not continuous, not curved, barely touching adjacent whorls. Fifth teleoconch whorl with 19-24.4-30 costae. Five mm width whorl (whorl 6 or 7) with 24-31-36 costae. Aperture subcircular. Apertural length/shell length 0.37-0.44-0.52. Umbilicus very narrow. Egg-capsules roundish, white, transparent, with protuberances, without embedded sand, closely connected along a straight mucous thread. One egg-capsule contains 342-425-532 eggs.