| Gyratrix hermaphroditus hermaphroditus Ehrenberg, 1831 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  from ponds. | 
| Catenula sp. Ferguson & Jones, 1949 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  from ponds and roadside ditches in the Norfolk area. | 
| Stenostomum sp. Ferguson & Jones, 1949 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  from ponds and streams in the Norfolk area. | 
| Rhynchoscolex sp. Ferguson & Jones 1949 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  from ponds and streams in the Norfolk area. | 
| Microstomum sp. Steinböck, 1948 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  Norfolk Golf Course ponds. | 
| Dalyellia sp. Ferguson & Jones, 1949 | 1948 or earlier | shallow |  | from collection records ranging 1931 thru 1948.  Norfolk Golf Course ponds. | 
| Macrostomum orthostylum Braun, 1885 | prior to 1940 |  |  |  | 
| Macrostomum appendiculatum (1) stirewalti Jones & Ferguson, 1941 | 1941 or earlier |  |  |  | 
| Macrostomum norfolkensis Jones & Ferguson, 1940 | 1940 or earlier |  |  |  |