Retusa truncatula (Bruguière, 1792)
Norway to Canarias, Azores to Mediterranean, Black Sea.
Predator in the infralittoral.
Original taxon: Bulla truncatula.
3m deep, in grit, at the foot of the citadel, south of the harbour, Methóni, Messinia, Peloponnese, SW. Greece. 3,1-3,8mm.
Synonyms: pellucida, retusa, semisulcata, truncatella
Same spot. Unusual transversal sculpture. 2,7mm.
« Shell, high 3 millimeters, width 1,5 millimeters, coiled, thin, barely subpellucid, almost cylindrical in shape, truncated and slightly narrowed at the top, dilated at the base. Spire slightly concave composed of three to four visible whorls, separated by a well marked suture. Surface of the last whorl crossed by many arched longitudinal folds which become obsolete below the periphery. Aperture elongated, narrow at the top, dilated and pyriform at the base. Labrum simple, sinuous, slightly bent in the middle. Columellar margin slightly convex. Columella thickened, almost perpendicular, with a rather pronounced fold. Colour of a uniform milk white. Habitat: coastal areas and laminaria. » – Bucquoy, Dautzenberg & Dollfus: Les mollusques marins du Roussillon vol. I fasc. XIII, Paris 1886, p.529. – Georgioúpoli, east of Chaniá, NW. Crete. 2,4mm.
8m deep, Bozcaada island, Çanakkale, W. Marmara, NW. Turkey. 4,5mm.
Limáni Sisiou, east of Malia, N. Lassithi, N. Crete. 2,5mm.
8m deep, Vignola Bay, Marina di Davia, Corbara, NW. Corsica. 3-3,2mm.
Lavasina beach, Brando, eastern coast of the Cap Corse, NE. Corsica. E. Vial legit (FR).
Shallow water, Elafonisi, SW. of Kissamos, W. Crete. 2-3,6mm.
A living specimen from Croatia. 4,3mm. Original picture provided by P. Ugarković (HR) – (CC BY-NC-SA).

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