Caecum auriculatum de Folin, 1868
Mediterranean and adjacent. Lives in soft bottoms from shallow water to circa 50m deep. Grazer and detritus feeder.
Above, the species in Bucquoy, Dautzenberg & Dollfus: Les mollusques marins du Roussillon vol. I, p.232.
« Testâ irregulariter elevatâ, interdùm latâ, cylindricâ, paulò arcuatâ; subdiaphanâ, nitidâ, minutissime transversim striatâ; aperturam versùs annulo parùm expresso, lato, planato, tumescente; aperturâ vix declivi, haud contractâ, subacutâ. Septo mamillato, seu hemispherico, prominente; apice dextrorso lato, auriculato; margine laterali et dorsali in uno, convexo, semi-circulari… » – de Folin & Périer: Les fonds de la mer… vol. I, Paris 1867-1871, via BHL.

Above and below:
4-6m deep, in grit, Cala d’Alivu, Isola Rossa, NW. Corsica. 1,75mm (subadult, above) to 2-2,25mm (below).
A finger, with a single or a double ring, the first always very close to the aperture. Very weak sculpture of transversal striae. Septum hemispherical and slightly flattened, with an ear-like projection on the dextral side in fully adult specimens.
Cap Ras, Llançà, Girona, Catalunya, NE. Spain. 2mm.
Notice the characteristic septum.
3m deep, Marathon bay, Eastern Attikí, Central Greece. 2,4mm.
Growth rings of irregular strength. Anse Bernardi, Port-Vendres, Eastern Pyrenees, S. France. 1,6mm.
Probable auriculatum from 40m deep, Málaga, Andalucia, S. Spain. 2,5mm.
20cm deep, Vičja-Luka bay, NW. extremity of Brač island, Split-Dalmatia Comitat, S. Croatia. 2mm. Original picture provided by R. Stanić (HR) – (CC BY-NC-SA).

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