| Olisthanella obtusa (Schultze, 1851) | 1913 or earlier |  |  |  | 
| Olisthanella nassonoffii (Graff, 1882) | 1913 or earlier |  | sand mud |  | 
| Olisthanella obtusa (Schultze, 1851) | 1877 or earlier |  |  | Moskau. | 
| Planaria torva (Müller, 1773) | 1926 and earlier |  |  | Russland:  Leningrad; Moskau u.s.w., aber nicht östlich von der Wolga. | 
| Opistomum pallidum Schmidt, 1848 | 1924 or earlier |  |  | Moskau | 
| Strongylostoma radiatum (Müller, 1774) | 1924 or earlier |  |  |  | 
| Rhynchomesostoma rostratum (Müller, 1774) | 1877 or earlier |  |  |  | 
| Olisthanella truncula (Schmidt, 1858) | 1877 or earlier |  |  |  | 
| Mesostoma ehrenbergii (Focke, 1836) | 1877 or earlier |  |  |  | 
| Mesostoma lingua (Abildgaard, 1789) | 1900 or earlier |  |  |  | 
| Bothromesostoma personatum (Schmidt, 1848) | 1877 or earlier |  |  |  | 
| Microdalyellia armigera (Schmidt, 1862) | 1924 or earlier |  |  |  | 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1877 or earlier |  |  | Moskau |