Description (Gittenberger et al, 2000):
Shell: Very fragile, moderately slender conical, creamy white; reaching 20.8 mm in length. Length/width 2.0-2.2-2.3 . Protoconch whorls ca. 3. Protoconch with three whorls, with numerous fine, incised, axial lines. Maximum diameter of protoconch 1, 0.14-0.15 mm (n=2). Teleoconch whorls up to 10, separated by deep suture. Teleoconch sculpture of evenly spaced, orthocline, thin, lamellate costae, and numerous very fine spiral threads (>900 on the 9th whorl), superimposed on somewhat coarser spiral cordlets (ca. 15 on fifth teleoconch whorl). Initial whorls with multiple, lamellate costae, fused together to form thicker ones. Coarser spiral cordlets are most prominent on initial teleoconch whorls, where they are superimposed on costae; coarser cordlets become obsolete on most abapical whorls. Costae are more or less damaged in all specimens; better preserved costae coronate. Particularly below the periphery, costae somewhat curved abaperturally at their free margins, whereas adapically more erect and slightly curved abaperturally or adaperturally near suture, depending on position of costa on adjoining whorl. Costae mostly continuous, but hardly touching each other. Fifth teleoconch whorl with 20-24-31 costae. Five mm whorl (whorl 6 or 7) with 23-30-33 costae. Aperture subcircular. Apertural length/shell length 0.3. Umbilicus very narrow. Egg-capsules drop shaped, embedded with sand and closely connected along a straight, longitudinally striated, mucous thread. Capsules 3.0-3.3-3.5 mm length and 1.5-1.6-2.0 mm in width. Capsules contain 93-120-173 white eggs.