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Southwest Florida Shells

José H. Leal

Argopecten irradians

(Lamarck, 1819)

Family Pectinidae

Bay Scallop

Shell size to 75 mm; shell valves convex, hinge with projections of about same size. Upper valve less convex than lower valve. Surface sculpture of 19 to 21 strong, squarish ribs. Lower valve light color, usually white. Upper valve browninsh to grayish. A recent study has shown that the subspecific nomenclature for southwest Florida populations of the bay scallop is still unresolved.

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