Lape Pepin mucket, Lampsilis luteola (Lamarck), male, upper left; Lake Pepin mucket, Lampsilis luteola (Lamarck), female, upper right; Butterfly, Plagiola securis (Lea), lower left); Pocketbook, Lampsilis ventricosa (Barnes), lower right. 1921. Lampsilis;

Freshwater and Marine Image Bank, University of Washington Libraries Digital Collections