Keywords: FMIB 47850 Left valve of Unio rectus Inside viewExtremely irregular mass of righ purplish nacreous matter, with many protuberances, lying.jpeg check categories 21 August 2015 3 Left valve of Unio rectus Inside view Extremely irregular mass of righ purplish nacreous matter with many protuberances lying between the hinge and the interior abudctor impression and partly occupying the space of the latter The shell is almost entirely white The pearly pertuberances at the right of the hinge are of a rich purple color The shell is pure white Subject Unio Freshwater mussels Nacre Tag Shellfish 1898 00 Cite book Fresh-Water Pearls and Pearl Fisheries of the United States Kunz George F Washington DC Government Printing Office 1898 Bulletin of the United States Fish Commission vol 17 1897 Plate VII-2 Creator George Frederick Kunz PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 47850 Images from the Freshwater and Marine Image Bank to check George Frederick Kunz Unio Shellfish |