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Rishiri Island, Japan
latitude: 45.180557 45 10 50 N
longitude: 141.243057 141 14 35 E
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
| Bdellocephala borealis | Aug 22-24, 1956 | 200 specimens, both sexually mature and immature, were collected from an outlet of Hime-numa Pond, Rishiri Island. | ||
| Bdellocephala borealis | Sep 2-4, 1957 | About 1,500 specimens, both sexually mature and immature, were collected from an outlet of Hime-numa Pond, Rishiri Island. | ||
| Vannuccia hirutai | Jul 31, 1978 | Die Insel Rishiri. Die Küste Numaura. Ein Expl. | ||
| Bdellocephala borealis | Aug 2-5, 1964 | About 2,000 specimens, both sexually mature and immature, were collected from an outlet of Hime-numa Pond, Rishiri Island. | ||
| Polycelis schmidti | 1969 or earlier | Middle and South Hokkaaidô (including Rishiri Island). |