« Shell thin and fragile, whitish, slightly reddish, perfectly trochiform, with elevated spire, 4 convex whorls, the last one large and wide with the base slightly flattened; suture deep; aperture wide, obliquely expanded, ovate-elliptic; outer lip very thin, oblique; the columella is regularly curved, the umbilicus is large and deep; there is no keel on the base. Surface barely shining, regularly covered with raised spiral lines. » – G. O. Sars: Bidrag til Kundskaben om Norges arktiske Fauna. I. Mollusca Regionis Arcticae Norvegiae, Christiania 1878, p.213.