Keywords: FMIB 38873 Diagram showing poistion of Unio plowing its way through the bo5ttom of a river.jpeg check categories 28 August 2015 3 Diagram showing poistion of Unio plowing its way through the bo5ttom of a river S shell; F foot; Br branchial opening; a anal opening Arrows indicate direction of the animal and the currents Subject Unio Freshwater mussels Tag Shellfish 1899 Cite book Pearly Fresh-Water Mussels of the United States Their Habits Enemies and Diseases with Suggestions for Their Protection Simpson Charles T Washington DC Government Printing Office 1899 Bulletin of the United States Fish Commission vol 18 1898 280 Creator Charles Torrey Simpson PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 38873 Images from the Freshwater and Marine Image Bank to check Charles Torrey Simpson Unio Shellfish |