Philadelphia, Pennsylvania, USA
latitude: 39.952     39°57'7.2"N
longitude: -75.164001     75°9'50.4"W
[Precision of location: Alexandria Digital Library (with USGS GNIS data)] 
[Site Named Here by name of site (or city, etc.)] 
| Prostomum marginatum Leidy, 1847 | 1847 or earlier | ditches. | ||
| Hydrolimax bruneus Girard, 1891 | 1891 or earlier | collected in a small stream in Fairmont Park. | ||
| Phagocata gracilis (Haldeman, 1840) | prior to 1885 | |||
| Rhynchoscolex vejdovskyi Sekera, 1889 | 1913 or earlier | |||
| Microstomum philadelphicum Leidy, 1852 | 1852 or earlier | 
| Home page -- (Main hierarchy) |