| Stenostomum virginianum Nuttycombe, 1931 | Jul 1930 |  |  | collected in quiet pools. | 
| Anokkostenostomum saliens (Kepner & Carter, 1931) | 1938 or earlier |  |  |  | 
| Stenostomum kepneri Nuttycombe & Waters, 1938 | 1938 or earlier |  |  | collected from several localities in the region of Mountain Lake. | 
| Anokkostenostomum tuberculosum (Nuttycombe & Waters, 1938) | 1938 or earlier |  |  | collected in large numbers. | 
| Anokkostenostomum pegephilum (Nuttycombe & Waters, 1938) | 1938 or earlier |  |  | collected in large numbers from two springs in the region of the Mountain Lake Biological Station, at elevations of 3700 and 3900 feet (temp 42 degrees F and 46 degrees F). | 
| Planaria dactyligera dactyligera Kenk, 1935 | 1935 or earlier |  |  | collected near south bank of lake. | 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1939 or earlier |  |  |  | 
| Typhloplana viridata ovipara Mahan, 1956 | 1956 or earlier |  |  | Mountain Lake specimens are Typhloplana viridata but designated as a new sub-species, ovipara, since they have no viviparous stage of reproduction. | 
| Microdalyellia gilesi Jones & Hayes, 1941 | 1941 or earlier |  |  | Mountain Lake and Blue Ridge Mountains. | 
| Rhynchomesostoma rostratum (Müller, 1774) | 1939 or earlier |  |  |  | 
| Geocentrophora baltica (Kennel, 1883) | 1939 or earlier |  |  | Mountain Lake Station. | 
| Castrella (Castrella) pinguis (Silliman, 1884) | 1939 or earlier |  |  |  |