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Black Lake, Cheboygan County, Michigan, USA
west side of Black Lake.
latitude: 45.472599
longitude: -84.311699
Precision of location: Gauged from chart or map
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Dugesia tigrina | Aug 7, 1940 | Planarians and cocoons numerous under stones. Water temperature 23.0 degrees C. In a narrow bay on the west side of the lake; bottom, mud and stones, dense vegetation of algae and higher plants. |