| Retusa umbilicata (Montagu, 1803) |
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| N. Norway to Cape Province, Azores to Mediterranean; New England. Predator in the infralittoral and the circalittoral, down to the continental shelf (300fm in Odhner, 1907). Original taxon: Bulla umbilicata. Synonyms: strigella, subcylindrica. 15m deep, Taranto, Puglia, S. Italy. 2,2mm. |
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| 40m deep, off Le Scole, south of the harbour, Isola del Giglio, Toscana, W. Italy. 2,5mm. |
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« Bulla with an oblong-oval, smooth, white shell. Apex rounded, umbilicated. Aperture extremely narrow, the whole length of the shell, dilating a little at the base. » – G. Montagu: Testacea britttanica vol. I, London 1803, p.222. Lavasina beach, Brando, eastern coast of the Cap Corse, NE. Corsica. 1,4mm. |
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| 10-12m deep, Vignola Bay, Marina di Davia, Corbara, NW. Corsica. 1,8mm. |
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| 80m deep, Málaga, Andalucia, S. Spain. 2-2,4mm. |
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| Shallow water grit, Elafonisi, SW. of Kissamos, W. Crete. 1,7mm. |
| — back to Retusidae — |