Delaware River, near Philadelphia, Pennsylvania, USA
latitude: 40.0798 40°4'47.28"N
longitude: -74.884804 74°53'5.29"W
[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]
Hydrolimax grisea | 1851 or earlier | check exact location in reference. | ||
Hydrolimax grisea | 1938 or earlier | collected by Dr. Charles Hadley near Montclair. exact location unknown. |
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