| author | date | title | journal / publication | Okugawa KI | 1953 | A monograph of Turbellaria (Acoela, Rhabdocoela, Alloecoela and Tricladida) of Japan and its adjacent regions. | Kyoto Gakugei Univ. Ser.B., No. 3, p. 20-43. |
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| Monocotylus karafutoensis Okugawa, 1953 | w | primary taxonomic authority (describer) | ||
| Gieysztoria inflata (Okugawa, 1930) | [with synonyms] | w | other taxonomic work | 28 |
| Geoplana lapidicola Stimpson, 1857 | w | other taxonomic work | ||
| Rhynchoscolex simplex Leidy, 1852 | [with synonyms] | w | other taxonomic work |