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Southwest Florida Shells with Emphasis on Sanibel & Captiva

By José H. Leal

Family Triphoridae

Marshallora modesta

(C.B. Adams, 1850)

Modest Triphora

Shell size to 5 mm; shell elongate, sinistral. Sculpture of spiral rows of rounded beads, two rows on first 4-5 whorls, three on subsequent whorls, four on last whorl. Aperture lozenge-shaped, with short anterior canal. Base with 1-2 narrow cords near periphery. Triphorids live in association with sea sponges (which in turn may be found locally living on rocks and other hard surfaces).