| Catenula lemnae Duges, 1832 | prior to 1945 |  |  | various times, found with Spirostomum ambigum. | 
| Catenula sawayai (Marcus, 1945) | prior to 1945 |  |  |  | 
| Chordarium evelinae Marcus, 1945 | prior to 1945 |  |  |  | 
| Chordarium philum Marcus, 1945 | prior to 1945 |  |  |  | 
| Stenostomum tauricum Nasonov, 1924 | prior to 1945 |  |  |  | 
| Stenostomum uronephrium Nuttycombe, 1931 | prior to 1945 |  |  |  | 
| Stenostomum virginianum Nuttycombe, 1931 | prior to 1945 |  |  |  | 
| Anokkostenostomum pseudoacetabulum (Nuttycombe & Waters, 1935) | prior to 1945 |  |  |  | 
| Stenostomum cryptops Nuttycombe & Waters, 1935 | prior to 1945 |  |  |  |