Creseis virgula (Rang, 1828) forma virgula (Rang, 1828)
Shell transparent, cross-section circular, surface smooth, long, narrow, tube-shaped, curved in posterior part. With wing protrusions. Embryonic shell without rings above rounded posterior part, delimited only by faint constriction. Angle between teleoconch and protoconch: >30°. Length: 6 mm, diameter: 2 mm.