Rhynchomesostoma rostratum (Müller, 1774) | 1953 or earlier | | | |
Mesostoma productum (Schmidt, 1848) | 1953 or earlier | | | |
Euplanaria gonocephala (Duges, 1830) | 1937 or earlier | | | |
Dugesia japonica Ichikawa & Kawakatsu, 1964 | Apr 26, 1965 | | | 50 specimens, none with sex organs. A small stream at Makanaji. . Alt.about 1000 m. |
Dugesia japonica Ichikawa & Kawakatsu, 1964 | 1968 or earlier | | | 20 specimens, four sexually mature. A pool fed by a spinning water in the vicinity of Mt. Sui-hô. Alt.about 2300 m. |
Dugesia japonica Ichikawa & Kawakatsu, 1964 | Apr 27, 1965 | | | 45 specimens, none with sex organs. A large stream at Makanaji. . Alt.about 1000 m. |