Keywords: Cyclas rivicola (Sowerby).jpg En Cyclas rivicola Leach accepted as Sphaerium rivicolahttp //mussel-project uwsp edu/db/db php p tax l spp n 7485 From Illustrated Index of British Shells Plate VI Fig 18 1859 Illustrated Index of British Shells Plate 06 jpg Creator George Brettingham Sowerby II PD-Art PD-old-100 Sphaerium rivicola Illustrated Index of British Shells |