Southwest Florida Shells with Emphasis on Sanibel & Captiva
José H. Leal
Shell size to 8 mm; shell elongate, with six rounded whorls each with 17-40 axial ribs. Suture indistinct. Color yellowish to brownish. There is eventual presence of a basal ridge, and presence of a thick outer lip that in some shells look “doubled” (arrow). Found in mangrove litter above high-tide line. Truncatella caribaeensis Reeve, 1842 is now considered a synonym.