| Species | Name Used |
|---|---|
| Steganoderma formosum unspecified | Steganoderma formosum (p. 2325, 2330 ) |
| Stephanostomum casum (Linton, 1910) | Stephanostomum casum (p. 2323, 2325, 2331 ) |
| Stephanostomum dentatum unspecified | Stephanostomum dentatum (p. 2325 ) |
| Stephanostomum tristephanum unspecified | Stephanostomum tristephanum (p. 2324, 2331 ) |
| Telolecithus pugetensis unspecified | Telolecithus pugetensis (p. 2323, 2331 ) |
| Tubulovesicula lindbergi unspecified | Tubulovesicula lindbergi (p. 2321, 2323, 2325-2326, 2328 ) |