Ectoparasite of unknown echinoderms.
Original taxon: Vitreolina devians. Synonym: parfaiti.
« Two strong constant deviations, which make the shells arched on the dorsal and buccal sides, and another near the tip, which is mammillated. Whorls and aperture compressed. Profile of the lip very protruding. » – T. A. di Monterosato: Nomenclatura generica e specifica di alcune conchiglie mediterranee, Palermo 1884, p.101.
The double curvature of the shell, associated with a labial expansion very anteriorly placed, build a typical feature. 14m deep, on sand, est of the small venetian fortress, Methóni, Messinia, SW. Peloponnese, SW. Greece. 3,8mm.
The aperture is much more narrow than in Vitreolina philippi, with which this species can be sometimes confused, when philippi shows also a double curvature. 70m deep, Golfo di Carini, west of Palermo, NW. Sicily. 1,3mm. Original pictures provided by L. A. del Blanco (IT) – (CC BY-NC-SA).