Alderella Odhner, 1968 (additional source)
Alderia Allman, 1845 (basis of record)
Alderia uda Ev. Marcus & Er. Marcus, 1956 (basis of record)
Alderiopsis nigra (Baba, 1937) (basis of record)
Aplysiopsis brattstroemi (Er. Marcus, 1959) (basis of record)
Aplysiopsis enteromorphae (Eliot, 1905) (basis of record)
Aplysiopsis minor (Baba, 1959) (basis of record)
Aplysiopsis nigra (Baba, 1949) (basis of record)
Aplysiopsis orientalis (Baba, 1949) (basis of record)
Aplysiopsis sinusmensalis (Macnae, 1954) (additional source)
Aplysiopsis toyamana (Baba, 1959) (basis of record)
Ascobulla Ev. Marcus, 1972 (basis of record)
Ascobulla californica (Hamatani, 1971) (basis of record)
Ascobulla fischeri (A. Adams & Angas, 1864) (basis of record)
Ascobulla japonica (Hamatani, 1969) (basis of record)
Ascobulla pusilla (G. Nevill & H. Nevill, 1869) accepted as Ascobulla fischeri (A. Adams & Angas, 1864) (basis of record)
Ascobulla souverbiei (Montrouzier, 1874) accepted as Cylindrobulla souverbiei (Montrouzier, 1874) (basis of record)
Bosellia cohellia Ev. Marcus, 1978 (basis of record)
Calliopaea A. d'Orbigny, 1837 (basis of record)
Costasiella Pruvot-Fol, 1951 (basis of record)
Costasiella formicaria (Baba, 1959) (basis of record)
Costasiella illa (Er. Marcus, 1965) (basis of record)
Costasiella iridophora Ichikawa, 1993 (basis of record)
Costasiella kuroshimae Ichikawa, 1993 (basis of record)
Costasiella pallida K. R. Jensen, 1985 (basis of record)
Costasiella paweli Ichikawa, 1993 (basis of record)
Costasiella rubrolineata Ichikawa, 1993 (basis of record)
Costasiella usagi Ichikawa, 1993 (basis of record)
Costasiella vegae Ichikawa, 1993 (basis of record)
Cyerce edmundsi T. E. Thompson, 1977 (basis of record)
Cyerce elegans Bergh, 1870 (basis of record)
Cyerce habanensis Ortea & Templado, 1989 accepted as Cyerce antillensis Engel, 1927 (basis of record)
Cyerce kikutarobabai Hamatani, 1976 (basis of record)
Cyerce nigra Bergh, 1871 (basis of record)
Cyerce nigricans (Pease, 1866) (basis of record)
Cyerce pavonina Bergh, 1888 (basis of record)
Elysia Risso, 1818 (basis of record)
Elysia abei Baba, 1955 (basis of record)
Elysia amakusana Baba, 1955 (basis of record)
Elysia atroviridis Baba, 1955 (basis of record)
Elysia australis (Quoy & Gaimard, 1832) (basis of record)
Elysia babai Pruvot-Fol, 1946 (basis of record)
Elysia bella (Pease, 1860) (basis of record)
Elysia bennettae T. E. Thompson, 1973 (basis of record)
Elysia chilkensis Eliot, 1916 (basis of record)
Elysia coodgeensis Angas, 1864 (basis of record)
Elysia degeneri Ostergaard, 1955 (basis of record)
Elysia diomedea (Bergh, 1894) (basis of record)
Elysia evelinae Er. Marcus, 1957 (additional source)
Elysia expansa (O'Donoghue, 1924) (basis of record)
Elysia fezi Vilella, 1968 (basis of record)
Elysia filicauda K. R. Jensen & F. E. Wells, 1990 (basis of record)
Elysia flavipunctata Ichikawa, 1993 (basis of record)
Elysia flavomacula K. R. Jensen, 1990 (basis of record)
Elysia furvacauda Burn, 1958 (basis of record)
Elysia grandifolia Kelaart, 1858 (additional source)
Elysia grandis Bergh, 1872 (basis of record)
Elysia haingsisiana Bergh, 1905 accepted as Thuridilla haingsisiana (Bergh, 1905) (basis of record)
Elysia halimedae Macnae, 1954 accepted as Elysia pusilla (Bergh, 1872) (additional source)
Elysia hamatanii Baba, 1957 (basis of record)
Elysia hedgpethi Er. Marcus, 1961 (basis of record)
Elysia hendersoni Eliot, 1899 (basis of record)
Elysia hirasei Baba, 1955 (basis of record)
Elysia japonica Eliot, 1913 (basis of record)
Elysia kushimotoensis Baba, 1957 (basis of record)
Elysia lobata A. Gould, 1852 (basis of record)
Elysia maoria A. W. B. Powell, 1937 (basis of record)
Elysia marginata (Pease, 1871) (basis of record)
Elysia minima Ichikawa, 1993 (basis of record)
Elysia nealae Ostergaard, 1955 (basis of record)
Elysia nigrocapitata Baba, 1957 (basis of record)
Elysia nigropunctata (Pease, 1871) (basis of record)
Elysia nisbeti T. E. Thompson, 1977 (additional source)
Elysia obtusa Baba, 1938 (basis of record)
Elysia oerstedii Mörch, 1859 (basis of record)
Elysia patagonica Muniain & Ortea, 1997 (basis of record)
Elysia patina Ev. Marcus, 1980 (additional source)
Elysia pilosa Risbec, 1928 (basis of record)
Elysia pratensis Ortea & Espinosa, 1996 (additional source)
Elysia pruvotae Risbec, 1953 (basis of record)
Elysia punctata Kelaart, 1858 (additional source)
Elysia rufescens (Pease, 1871) (basis of record)
Elysia serca Er. Marcus, 1955 (additional source)
Elysia setoensis Hamatani, 1968 accepted as Elysia atroviridis Baba, 1955 (basis of record)
Elysia siamensis Swennen, 1998 (basis of record)
Elysia slimora Er. Marcus & Ev. Marcus, 1966 (basis of record)
Elysia sugashimae Baba, 1955 (basis of record)
Elysia thompsoni K. R. Jensen, 1993 (basis of record)
Elysia tokarensis Baba, 1957 (basis of record)
Elysia trilobata Heller & T. E. Thompson, 1983 (basis of record)
Elysia trisinuata Baba, 1949 (basis of record)
Elysia verrucosa K. R. Jensen, 1985 (basis of record)
Elysia viridis (Montagu, 1804) (additional source)
Elysia vreelandae Ev. Marcus & Er. Marcus, 1970 (basis of record)
Elysia yaeyamana Baba, 1936 (basis of record)
Elysiobranchus Pruvot-Fol, 1930 accepted as Elysia Risso, 1818 (additional source)
Elysiobranchus mercieri Pruvot-Fol, 1930 accepted as Elysia mercieri (Pruvot-Fol, 1930) (basis of record)
Elysiobranchus ryukyuensis Ichikawa, 1993 (basis of record)
Ercolania Trinchese, 1872 (basis of record)
Ercolania boodleae (Baba, 1938) (basis of record)

 Status

 for Hermaea minor Bergh, 1888

Jensen (2007, appendix) listed Hermaea minor Bergh, 1888 as an invalid species, but did not indicate its senior synonym. [details]