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Southwest Florida Shells with Emphasis on Sanibel & Captiva

By José H. Leal

Family Tornidae

Cyclostremiscus cubanus

(Pilsbry & Aguayo, 1933)

Cuban Vitrinella

Shell very small, reaching only to 1.5 mm; shape discoidal. Sculpture of three strong keels with moderately deep interspaces between them, with the abapical (away from the apex) one most prominent. Umbilicus large, base with a strong additional keel that forms the “lower” angle of the aperture. A series of well-spaced radial ribs is present between this keel and the shell periphery. Color vitreous-white. Species identified by Harry G. Lee, Main photos by James F. Kelly.