形態特徵:Mature whorls, 3-4, slightly convex and suture, impressed. Sculpture of rounded ribs with weaker spirals between ribs, fading at bottom; 12 ribs and 6 spirals on the penultimate whorl. Aperture, narrowly ovate and outer lip, simple.
棲所環境:Off Thoain Bay in TasmaShell, minute, pale white, oval-conic with apex, decollatenia is the fatherland. It is also found as beach drift at Lutao, Taiwan.