Overlapping markers can be separated by clicking on them.
Hovering the cursor over a marker will show the site's name.
Clicking on a marker will show information available about the collection site. (Compare with corresponding letter in table.)
Philadelphia, Pennsylvania, USA
latitude: 39.952
longitude: -75.164001
Precision of location: Alexandria Digital Library (with USGS GNIS data)
Site Named Here: By name of site (or city, etc.)
| Prostomum marginatum | 1847 or earlier | ditches. | ||
| Hydrolimax bruneus | 1891 or earlier | collected in a small stream in Fairmont Park. | ||
| Phagocata gracilis | prior to 1885 | |||
| Rhynchoscolex vejdovskyi | 1913 or earlier | |||
| Microstomum philadelphicum | 1852 or earlier |