Genus: Cythnia P.P. Carpenter, 1864 (syn: Cythnoa - DB: 2 SP, 0 IMG)
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Genus: Diacolax G. Mandahl-Barth, 1946 (DB: 1 SP, 0 IMG)
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Genus: Echineulima C.F. Lützen & C. Nielsen, 1975 (syn: Luetzenia, Leutzenia - DB: 11 SP, 6 IMG)
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Genus: Echiuroidicola A. Warén, 1980 (DB: 1 SP, 0 IMG)
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Genus: Enteroxenos K.E.H. Bonnevie, 1902 (syn: Comenteroxenos - DB: 4 SP, 0 IMG)
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Genus: Entocolax W. Voigt, 1888 (DB: 7 SP, 1 IMG)
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Genus: Entoconcha H.P.C. Møller, 1852 (syn: Helicosyrinx - DB: 1 SP, 1 IMG)
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Genus: Ersilia T.A. de M. Monterosato, 1872 (syn: Hersilia - DB: 2 SP, 1 IMG)
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