| Catenula lemnae Duges, 1832 | prior to 1945 |  |  | various times, found with Spirostomum ambigum. | 
| Catenula alitha Marcus, 1945 | prior to 1945 |  |  |  | 
| Catenula sawayai (Marcus, 1945) | prior to 1945 |  |  |  | 
| Chordarium evelinae Marcus, 1945 | prior to 1945 |  |  |  | 
| Chordarium leucanthum Marcus, 1945 | prior to 1945 |  |  |  | 
| Stenostomum grande Child, 1902 | prior to 1945 |  |  |  | 
| Stenostomum ciliatum Kepner & Carter, 1931 | prior to 1945 |  |  |  | 
| Stenostomum glandulosum Kepner & Carter, 1931 | 1943-1944 |  |  |  | 
| Anokkostenostomum saliens (Kepner & Carter, 1931) | prior to 1945 |  |  |  | 
| Stenostomum virginianum Nuttycombe, 1931 | prior to 1945 |  |  |  | 
| Anokkostenostomum pseudoacetabulum (Nuttycombe & Waters, 1935) | prior to 1945 |  |  |  | 
| Rhynchoscolex nanus Marcus, 1945 | prior to 1945 |  |  |  | 
| Gieysztoria complicata (Fuhrmann, 1914) | 1946 or earlier |  |  | Parana, Curitiba, Rio Barigui, langsam fliessendes Wasser, im Schlamm. |