| author | date | title | journal / publication | Valkanov A | 1938 | Cytologische Untersuchungen ueber den Rhabdocoelen. | Jahrb Univ. Sofia, Phys. math Fak. 34, p. 321-402 |
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| Rhynchomesostoma rostratum (Müller, 1774) | [with synonyms] | w | other research on this sp. | Cytologie |
| Mesostoma lingua (Abildgaard, 1789) | [with synonyms] | w | other research on this sp. | |
| Mesostoma craci Schmidt, 1858 | [with synonyms] | w | other research on this sp. | 342, 355 Chromos., Testes |