A

Pleurocera acuta Rafinesque, 1831

A-C - Color variations, smooth form. Length, 24-26 mm, Jefferson Co., Big River at Browns Ford bridge near Ware, on mud in a few inches of water near shoreline. Frieda Schilling. D - Carinate form. Length, 29 mm. Ozark Co., Lake Norfork at Tecumseh, in a few inches of water very close to shoreline of west bank, on soft, silty mud near the northwest corner of Hwy 160 bridge. Frieda Schilling