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 | | | |