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Rishiri-to (Risiri Sima, Risirizima), Japan
latitude: 45.1833
longitude: 141.25
Precision of location: Alexandria Digital Library (with NGA GNDB data)
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Polycelis schmidti | 1974 or earlier | North Hokkaido including the Okhotsk seaboard district. Rishiri and Rebun Islands on the Sea of Japan. | ||
| Polycelis sapporo | 1974 or earlier | North Hokkaido including the Okhotsk seaboard district. Rishiri and Rebun Islands on the Sea of Japan. | ||
| Dugesia japonica | 1974 or earlier | North Hokkaido including the Okhotsk seaboard district. Rishiri and Rebun Islands on the Sea of Japan. |