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Southwest Florida Shells with Emphasis on Sanibel & Captiva

By José H. Leal

Family Cerithiidae

Cerithium lutosum

Menke, 1828

Variable Cerith

Shell to 13 mm; shell nodulose sculpture, with about 3-4 spiral rows of beads. Color variable, brown, dark-brown, blackish, or mottled with white flecks. Aperture usually white inside. This is not a common species locally. The shell in the main illustration (BMSM 127415) was collected by Susan Hewitt on Turner Beach (Blind Pass), Captiva, in December 2018; the shell in the additional image is one of two found in December 2016 at Turner Beach by Susan J. Hewitt and Steve Rosenthal.