Stenostomum leucops (Duges, 1828) | prior to 1974 | 0.2 m | sand | Numerous specimens. in the freshwate area of the Northern-BaySulina arm (pre-deltaic region) |
Stenostomum unicolor Schmidt, 1848 | prior to 1974 | | | |
Catenula lemnae Duges, 1832 | prior to 1974 | | | Numerous specimens. |
Microdalyellia brevimana (Beklemischev, 1921) | Aug 12, 1970 | | | Numerous specimens, 10 cm depth; predeltaic region, the Northern Bay, among plants, alluvial bottom. |
Gieysztoria triquetra (Fuhrmann, 1894) | 1970 or earlier | | | Very numerous, in the freshwater are of the 'melea' of the Sahalin Island and the Northern Bay, 10 to 30 cm depth, among plants. |
Proxenetes angustus Ax, 1951 | 1974 or earlier | 5.0 m | | Numerous specimens. |
Proxenetes angustus Ax, 1951 | 1974 or earlier | 3.0 m | | Numerous specimens. |
Schizorhynchus tataricus Graff, 1905 | 1974 or earlier | 5.0 m | | One specimen, Sulina arm, the Northern Bay. |