« Shell oval, of a light black colour. Three and a half whorls, growing quickly. Last whorl subangular, little descending. Aperture horizontal, semicircular; columellar margin rectilinear. Parietal callosity white, porcellaneous. […] The type is unicoloured, but one finds many specimens which have the test decorated with dark brown lineoles or stripes, standing out against a light background. » – P. Pallary: “ Deuxième complément à la faune malacologique de la Berbérie”, Journal de Conchyliologie vol.80(1), Paris 1936, p.53.

« We give this species the name of one of our sons-in-law, V. Van de Vondel, who assisted us in our research during our stay in Béni Mellal (central Morocco), in 1927. » – Variant “aurantium”, same spot. 8,3mm.