Villosa amygdalum (I. Lea, 1843) Florida Rainbow

St. Johns River at SR-520, ca. 5 mi NW Cocoa, Orange Co., Florida. In sand under one to three feet of water, near left bank. H. G. Lee and W. H. McCullagh, Jr.! 6 April, 1974. Female (above) 48 mm: exterior view left (L) valve, interior, R valve; Male (below) 53 mm: likewise.