I Two-toothed Leuconia; 2 Nautilus Trumpet-snail; 3 Twisted Trumpet-snail; 



4 Shining Trumpet-snail; 5 Keeled Trumpet-snail ; 6 Margined Trumpet-snail; 



7 Round-spired Trumpet-snail ; 8 Glossy Trumpet-snail ; 9 Segmentina lineata ; 



ID Moss Bladder-snail ; 11 Fountain Bladder-snail ; 12 Physa acuta. 



