Abstract
This snail feeds generally at night, sometimes in shaded situations during the day, upon diatoms, filamentous green algae, Oscillatoria, and fragments of epidermal cells of grasses. The eggs are deposited on broken twigs, small stones, shells, and grasses. It hibernates during the winter under shells, stones, dense tufts of grass, and in holes in the mud always well above the high tide line. It is preyed upon by small fishes, marsh and aquatic birds, song sparrows, marsh wrens, red-winged blackbirds, and other marsh-inhabiting species.

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