« Shell small, globular, fairly solid, transparent, skeneimorph. Larval shell consisting of about 0.5 whorl, diameter 250µm and sculptured by small, sharp, branching tubercles, arranged in a spiral pattern which becomes more loosely arranged towards teleoconch. Adult teleoconch of about 2, almost smooth whorls, with some indistinct incremental lines. Adapical part of first whorl distinctly flattened and bearing a single spiral rib, which becomes indistinct and disappears on second whorl. Whorls rather tightly coiled, suture shallow. Aperture large, distinctly broader in lower part, prosocline and tangential. Umbilicus narrow, deep and open, sculptured by one slowly descending, outer spiral ridge and a more steeply descending and central rib, which eventually joins the inner lip. » – A. Warén: “New and little known ‘Skeneimorph’ gastropods from the Mediterranean Sea and the adjacent Atlantic Ocean”, Bollettino Malacologico vol. 27, Milano 1992, p.180. Notice that the type-material was collected at 300-400m deep, in a lost amphora.

Adult specimen from 600m deep, Capraia Isola, Archipelago Toscano, W. Italy. 1,7mm. Notice the flat subsutural ramp (« Adapical part of first whorl distinctly flattened ») with its thin outer keel than vanishes on the second teleoconch whorl.