« Shell onlong, or forming a long oval, rather thin, semi-transparent, and very glossy. Sculpture none, except microscopic lines of growth. Colour clear white. Spire bluntly pointed; nucleus inverted. Whorls three only (besides the nucleus), moderately convex; the last occupies two-thirds of the spire. Suture very narrow and slightly excavated; it is apparently margined by the overlapping of each successive whorl in that part. Mouth oval, contracted above and on the outer side, and somewhat channelled below, length about one-third of the spire. Outer lip thin, sloping downwards. Inner lip distinct. Pillar twisted. Umbilicus none. Tooth represented by a broad but not conspicuous fold. » – J. G. Jeffreys: “Mediterranean Mollusca”, Annals and Magazine of Natural History ser. 4 vol. 6, London 1870, p.79 via BHL.