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Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
| Scroll through list of sites as necessary. | site | collection date | depth | substrate | salin | locality kind | comments | reference |
|---|---|---|---|---|---|---|---|---|
| A | Susquehanna River, eastern Pennsylvania, USA | 1842 or earlier | freshwater | type locality | location specifics are in reference. | Haldeman SS (1843) 166; from Hyman LH 1938 (citation)- p 1,18 | ||
| B | Schuykill River, near Philadelphia, Pennsylvania, USA | 1851 or earlier | freshwater | check exact location in reference. | Leidy J (1852) 289, 290; from Hyman LH 1938 (citation)- p 1,18 | |||
| C | Delaware River, near Philadelphia, Pennsylvania, USA | 1851 or earlier | freshwater | check exact location in reference. | Leidy J (1852) 289, 290; from Hyman LH 1938 (citation)- p 1,18 | |||
| D | Delaware River, near Philadelphia, Pennsylvania, USA | 1938 or earlier | freshwater | collected by Dr. Charles Hadley near Montclair. exact location unknown. | Hyman LH (1938) 1,18 | |||
| E | Princeton, New Jersey, USA | spring 1935 | freshwater | collected by Prof. Dahlgren of Princeton University. Abundant every spring in the vicinity of Princeton. | Hyman LH (1938) 1,18 | |||