| Plagiostomum elongatum Gamble, 1893 | | w | primary taxonomic authority (describer) | 473 |
| Provortex rubrobacillus Gamble, 1893 | | w | primary taxonomic authority (describer) | 470-471, pl. xxxix, fig. 8, and pl. xl, fig. 12 |
| Phonorhynchus helgolandicus (Metschnikow, 1865) | [with synonyms] | w | other taxonomic work | 464 |
| Plagiostomum sagitta (Uljanin, 1870) | [with synonyms] | w | other taxonomic work | 474 |
| Pseudostomum inerme (Hallez, 1879) | | w | other taxonomic work | 484, t. 39, f. 4 |
| Allostoma austriacum (Graff, 1882) | | w | other taxonomic work | 480, t. 39, f. 7 |
| Monocelis hamata Jensen, 1878 | | w | other taxonomic work | 491, t. 41, f. 21 |
| Monocelis gamblei Graff, 1893 | | w | other taxonomic work | 492, t. 40, f. 18 |