Chioraera dalli Heath, 1918 accepted as Melibe leonina (A. Gould, 1852)
Chioraera leonina A. Gould, 1852 accepted as Melibe leonina (A. Gould, 1852)
Fimbria occidentalis Odhner, 1936 accepted as Tethys occidentalis (Odhner, 1936)
Jacunia papillosa de Filippi, 1867 accepted as Melibe papillosa (de Filippi, 1867)
Melibaea australis Angas, 1864 accepted as Melibe australis (Angas, 1864)
Melibaea fragilis Forbes, 1838 accepted as Doto fragilis (Forbes, 1838)
Melibaea lonchocera E. von Martens, 1879 accepted as Melibe lonchocera (E. von Martens, 1879)
Melibe arianeae Espinoza, DuPont & Á. Valdés, 2013
Melibe australis (Angas, 1864)
Melibe bucephala Bergh, 1902
Melibe capucina Bergh, 1875 (uncertain > taxon inquirendum )
Melibe colemani Gosliner & Pola, 2012
Melibe coralophilia Gosliner & Pola, 2012
Melibe digitata Gosliner & V. G. Smith, 2003
Melibe engeli Risbec, 1937
Melibe fimbriata Alder & Hancock, 1864 accepted as Melibe viridis (Kelaart, 1858)
Melibe japonica Eliot, 1913 accepted as Melibe viridis (Kelaart, 1858)
Melibe leonina (A. Gould, 1852)
Melibe liltvedi Gosliner, 1987
Melibe lonchocera (E. von Martens, 1879) (uncertain > taxon inquirendum )
Melibe maugeana Burn, 1960
Melibe megaceras Gosliner, 1987
Melibe minuta Gosliner & V. G. Smith, 2003
Melibe mirifica (J. K. Allan, 1932) accepted as Melibe viridis (Kelaart, 1858)
Melibe ocellata Bergh, 1888 (uncertain > taxon inquirendum )
Melibe papillosa (de Filippi, 1867)
Melibe pellucida Bergh, 1904 accepted as Melibe leonina (A. Gould, 1852)
Melibe pellucida Burn, 1957 accepted as Melibe maugeana Burn, 1960
Melibe pilosa Pease, 1860
Melibe rangi Bergh, 1875 accepted as Melibe viridis (Kelaart, 1858)
Melibe rosea Rang, 1829
Melibe tuberculata Gosliner & V. G. Smith, 2003
Melibe vexillifera Bergh, 1880 accepted as Melibe viridis (Kelaart, 1858)
Melibe viridis (Kelaart, 1858)
Meliboea minuta Forbes, 1844 accepted as Doto fragilis (Forbes, 1838)
Meliboea viridis Kelaart, 1858 accepted as Melibe viridis (Kelaart, 1858)
Propemelibe mirifica J. K. Allan, 1932 accepted as Melibe viridis (Kelaart, 1858)
Tethys (Aplysia) morio A. E. Verrill, 1901 represented as Aplysia morio (A. E. Verrill, 1901)
Tethys (Aplysia) tarda A. E. Verrill, 1901 accepted as Aplysia tarda (A. E. Verrill, 1901)
Tethys (Aplysia) willcoxi (Heilprin, 1887) accepted as Aplysia fasciata Poiret, 1789
Tethys (Neaplysia) californica (J. G. Cooper, 1863) accepted as Aplysia californica J. G. Cooper, 1863
Tethys (Neaplysia) ritteri T. D. A. Cockerell, 1901 accepted as Aplysia californica J. G. Cooper, 1863
Tethys (Phycophila) adamsi Pilsbry, 1896 (uncertain > taxon inquirendum )
Tethys californicus (J. G. Cooper, 1863) accepted as Aplysia californica J. G. Cooper, 1863
Tethys capensis O'Donoghue, 1929 accepted as Aplysia juliana Quoy & Gaimard, 1832
Tethys cervina Dall & C. T. Simpson, 1901 accepted as Aplysia cervina (Dall & C. T. Simpson, 1901)
Tethys cornigera Macri, 1816 accepted as Tethys fimbria Linnaeus, 1767
Tethys dominguensis Pruvot-Fol, 1954
Tethys elegans W. H. Turton, 1932 (uncertain > taxon inquirendum )
Tethys extraordinaria J. K. Allan, 1932 accepted as Aplysia extraordinaria (J. K. Allan, 1932)
Tethys fimbria Linnaeus, 1767
Tethys fimbriata [sic] accepted as Tethys fimbria Linnaeus, 1767
Tethys floridensis Pilsbry, 1895 accepted as Aplysia fasciata Poiret, 1789
Tethys hirasei Baba, 1936 accepted as Aplysia oculifera A. Adams & Reeve, 1850
Tethys kurodai Baba, 1937 accepted as Aplysia kurodai (Baba, 1937)
Tethys leporina Linnaeus, 1758 accepted as Tethys fimbria Linnaeus, 1767
Tethys maculata (Rang, 1828) accepted as Aplysia maculata Rang, 1828
Tethys maculata var. bipartita W. H. Turton, 1932 accepted as Aplysia maculata Rang, 1828
Tethys modesta Thiele, 1910 (uncertain > taxon inquirendum )
Tethys occidentalis (Odhner, 1936)
Tethys panamensis Pilsbry, 1895 accepted as Aplysia dactylomela Rang, 1828
Tethys parthenopeia Macri, 1816 accepted as Tethys fimbria Linnaeus, 1767
Tethys parvula (Mörch, 1863) accepted as Aplysia parvula Mörch, 1863
Tethys peasei Tryon, 1895 accepted as Aplysia peasei (Tryon, 1895)
Tethys pilsbryi Letson, 1898 accepted as Aplysia pilsbryi (Letson, 1898)
Tethys polyphylla Macri, 1816 accepted as Tethys fimbria Linnaeus, 1767
Tethys pulmonica (Gould, 1852) accepted as Aplysia pulmonica Gould, 1852
Tethys pulmonica var. tryoniana Pilsbry, 1895 accepted as Aplysia pulmonica Gould, 1852
Tethys robertsi Pilsbry, 1895 accepted as Aplysia robertsi (Pilsbry, 1895)
Tethys willcoxi (Heilprin, 1887) accepted as Aplysia fasciata Poiret, 1789
Tethys willcoxi var. perviridis Pilsbry, 1895 accepted as Aplysia perviridis (Pilsbry, 1895)