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Hokkaido Island (Yesso, Ezo, Yezo, Yeso), Japan
point to represent Hokkaido Island.
latitude: 43
longitude: 142
Precision of location: Place-name in gazetteer
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Pseudoceros albicornis | 1857 or earlier | Yesso Island, Hokkaido, Japan | ||
| Pseudoceros japonicus | 1857 or earlier | Yesso Island, Hokkaido, Japan. | ||
| Proschizorhynchella caudociliata | 2018 or earlier | sandy | "based on the material collected from sandy intertidal zones around Hokkaido, Northern Japan." | |
| Mesostoma lingua | 1953 or earlier | |||
| Phagocata albata | 1962 or earlier | |||
| Phagocata iwamai | 1962 or earlier | |||
| Polycelis akkeshi | 1962 or earlier | |||
| Phagocata tenella | 1962 or earlier | |||
| Polycelis schmidti | 1969 or earlier | Middle and South Hokkaaidô (including Rishiri Island). | ||
| Polycelis akkeshi | 1969 or earlier | Middle, East and North Hokkaidô | ||
| Proschizorhynchella magnoliae | 2018 or earlier | sandy | "based on the material collected from sandy intertidal zones around Hokkaido, Northern Japan." | |
| Proschizorhynchella shibazakii | 2018 or earlier | sandy | "based on the material collected from sandy intertidal zones around Hokkaido, Northern Japan." | |
| Proschizorhynchella shuttlecock | 2018 or earlier | sandy | "based on the material collected from sandy intertidal zones around Hokkaido, Northern Japan." | |
| Freddius tricaudatus | 2018 or earlier | sandy | "based on the material collected from sandy intertidal zones around Hokkaido, Northern Japan." |