Lajonkairia lajonkairii (Payraudeau, 1826)
Mediterranean. Original taxon: Venerupis lajonkairii.
1m deep, on gravel, Ghjunchitu bay, Isola Rossa, NW. Corsica. 20mm.
Synonym fragilis Nordsieck.
Golfo di Taranto, Puglia, S. Italy. 15mm.
2-4m deep, on muddy sand, 100m north off the dam, Elounda bay, NW. of Kolpos Mirabellou, Lasithi, N. Crete. 11-16mm.
5m deep, on muddy sand, Ligaria bay, Agia Pelagia, Iraklio, N. Crete.11,5mm.
Specimens from the western end of the range. 1m deep, in sand, Puerto de Mazarrón, Murcia, S. Spain. 12-13mm.
 
V. La Jonkairii in B. C. Payraudeau: Cat. Moll. Île de Corse, Paris 1826, via BHL. – « Catch in the dredge and in coral-fishing nets. Rare. Shell white, orbicular, subequilateral ; valves convex, transversally furrowed and longitudinally striated ; hooks close together and deflected inwards. Dedicated to Monsieur de La Jonkaire, member of the Natural History Society of Paris. »
Young specimen from Cap Ras, Llançà, Girona, catalunya, NE. Spain. 5,8mm.
Details of the external sculpture.
Radiating cords, sometimes diverging, sometimes converging, crossed by weaker concentric furrows.
Other synonym: cyclolites.
Above: the species in J. B. G. M. Bory de Saint-Vincent: Tableau encyclopédique et méthodique des trois règnes de la nature. Vers, coquilles, mollusques et polypiers tome II, Paris 1827, plate 272.

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