Mysia undata (Pennant, 1777)
Norway & Baltic to Canarias, to Mediterranean. Subtidal to continental shelf, in various sediments with a part of mud.
Original taxon: Venus undata.
Riccione, Rimini, Emilia-Romagna, NE. Italy. 15mm.
Synonyms: caduca, corrugata, incompta, sinuosa.
On mud at 150m deep, Málaga, Andalucia, S. Spain, 26mm.
« Venus undata : Venus with thin convex orbiculated shells, of a white color, tinged with yellow, and marked with thin concentric striae ; waved at the edges. Size of a hazel nut. » – T. Pennant: British zoology vol. IV, London 1777, via BHL.
« …waved at the edges… »
150-180m deep, Málaga. 30mm.
Original pictures provided by I. Mulero (ES).
– (CC BY-NC-SA) –
The species in E. Donovan: The natural history of British shells, vol. IV, London 1802, plate CXXI.
« Shell orbiculated, convex, thin, transversely marked with very fine striae, and waved at the margin. »
The animal in Forbes & Hanley: A history of British Mollusca and their shells vol. I, London 1853, plate M.
Beachstormed juvenile at Leucate, Occitania, S. France. 2mm.
Original pictures provided by A. Bertrand (FR).
– (CC BY-NC-SA) –
Specimens from Irish Sea.
At low tide on sand, Shell Island Peninsula, Llandberd, Gwynedd county, Wales. 21,5-25mm.
Specimen from Kattegat.
At low tide on beach, Hulsig Strand, Ålbaek Bugt, Frederikshavn, Nordjylland, E. Denmark. 26,5mm.

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