Patera roemeri (L. Pfeiffer, 1848) Texas Oval

    Drift associated with major flooding of the Brazos River, Quintana Beach County Park, Freeport, Brazoria County, Texas.  Steve Rosenthal! 24, 25, 27 June, 2016 (top - 21.3 mm. and bottom 20.3 mm.). Digital images by Lori Schroeder.