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Southwest Florida Shells with Emphasis on Sanibel & Captiva

By José H. Leal

Family Lyonsiidae

Entodesma brasiliense

(Gould, 1850)

Pearly Entodesma

Shell size to 25 mm; shell elongate, inequivalve, irregularly shaped. Posterior region usually wider than anterior. Postero-dorsal margin concave. Umbo anterior. Shell nacreous, translucent-brownish. Found in sponges or attached by thin byssal thread to other shells.