« Shell, 2¼mm ht., 1mm w., rather thick but vitreous and translucent. Spire elevated, with an obtuse apex, consisting of six smooth, glossy and lightly convex whorls. Suture shallow. Aperture oval, a little narrowed at its summit, with a continuous peristome. Columella arcuate. Labrum round, somewhat flaring at the base, edged by a narrow, weakly protruding, external bead. Colour hyaline white, revealing through transparency the internal structure of the shell, especially a milky white subsutural band. Operculum horny, thin, paucispiral. » – Bucquoy, Dautzenberg & Dollfus: Les mollusques marins du Roussillon vol.I(viii), Paris 1884, p.314.