| Opistomum fuscum Weise, 1942 | Jun 23-Jul 1, 1950 | 0.5 m |  | Jeesiönjärvi, Stratiotes, 0.5m tief (Karling, Luther, Papi) | 
| Castrada (Castrada) hofmanni Braun, 1885 | 1963 or earlier | 0.5 m |  | Jeesiönjärvi an Stratiotes, 0.5 m tief | 
| Castrada (Castrada) armata (Fuhrmann, 1894) | Jun 23, 1950 |  |  |  | 
| Strongylostoma elongatum elongatum Hofsten N, 1907 | Jun 23, 1950 |  |  | Jeesiönjärvi u. Hautajärvi, Stratiotes, Menyanthes, etc. | 
| Olisthanella obtusa (Schultze, 1851) | Jun 1950 | 0.5 m |  | Jeesiönjärvi, Stratiotes- Vegetation, alle drei Funde. | 
| Mesostoma lingua (Abildgaard, 1789) | Jun-Jul 1950 |  |  | Jeesiönjärvi-Hautajärvi auf Stratiotes, Menyanthes, etc., | 
| Microstomum lineare (Müller, 1773) | Jun 23, 1952 |  |  | Kittilä:  Hautajärvi u. Jeesiönjärvi in reicher Ufervegetation von Stratiotes, Menyanthes, Carices etc. | 
| Macrostomum rostratum Papi, 1951 | Jun 26, 1950 | 0.5 m |  | Jeesiönjärvi, zwischen Stratiotes | 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1955 or earlier |  |  |  |