• Achelia affinis (Bouvier, 1906) accepted as Achelia communis (Bouvier, 1906)
• Achelia alaskensis (Cole, 1904)
• Achelia anomala Arnaud, 1974
• Achelia armata Bouvier, 1916
• Achelia assimilis (Haswell, 1885)
• Achelia borealis (Schimkewitsch, 1895)
• Achelia brevichelifera Hedgpeth, 1948 accepted as Megarhethus brevicheliferus (Hedgpeth, 1948)
• Achelia chelata (Hilton, 1939)
• Achelia communis (Bouvier, 1906)
• Achelia echinata Hodge, 1864
• Achelia echinata japonica Ortmann, 1890 accepted as Achelia japonica Ortmann, 1890
• Achelia echinata nasuta Marcus, 1940 accepted as Achelia japonica Ortmann, 1890
• Achelia echinata orientalis (Losina-Losinsky, 1933) accepted as Achelia japonica Ortmann, 1890
• Achelia echinata sinensis (Lou, 1936) accepted as Achelia japonica Ortmann, 1890
• Achelia elongata (Hilton, 1943) accepted as Achelia borealis (Schimkewitsch, 1895)
• Achelia fibulifera (Dohrn, 1881) accepted as Achelia echinata Hodge, 1864
• Achelia franciscana (Dohrn, 1881) accepted as Achelia vulgaris (Costa, 1861)
• Achelia germanica (Hodgson, 1915) (uncertain > nomen dubium)
• Achelia gurjanovii Losina-Losinsky, 1961 accepted as Achelia alaskensis (Cole, 1904)
• Achelia hispida Hodge, 1864 (uncertain > nomen dubium)
• Achelia hoeki (Loman, 1923) accepted as Achelia communis (Bouvier, 1906)
• Achelia intermedia Calman, 1915 accepted as Achelia spicata (Hodgson, 1914)
• Achelia japonica Ortmann, 1890
• Achelia laevis Hodge, 1864
• Achelia langi (Dohrn, 1881)
• Achelia latifrons (Cole, 1904)
• Achelia longipes (Hodge, 1864) accepted as Ammothella longipes (Hodge, 1864)
• Achelia magnirostris (Dohrn, 1881) accepted as Ammothella longipes (Hodge, 1864)
• Achelia megova (Hilton, 1943)
• Achelia mitrata Gordon, 1944 accepted as Sericosura mitrata (Gordon, 1944)
• Achelia neotenica Krapp, 1986
• Achelia ovosetosa (Hilton, 1942)
• Achelia quadridentata (Hodgson, 1910)
• Achelia sawayai Marcus, 1940
• Achelia simplex (Giltay, 1934)
• Achelia simpliscima (Hilton, 1942) accepted as Achelia simplissima (Hilton, 1939)
• Achelia simplissima (Hilton, 1939)
• Achelia sinensis Lou, 1935 accepted as Achelia japonica Ortmann, 1890
• Achelia spicata (Hodgson, 1914)
• Achelia spinosa (Stimpson, 1853)
• Achelia spinoseta (Hilton, 1939)
• Achelia turba Stock, 1990
• Achelia variabilis Stock, 1954 accepted as Achelia assimilis (Haswell, 1885)
• Achelia vulgaris (Costa, 1861)
• Achelia wilsoni (Schimkewitsch, 1890) accepted as Achelia assimilis (Haswell, 1885)
• Ammothea achelioides Wilson, 1878 accepted as Achelia spinosa (Stimpson, 1853)
• Ammothea antarctica Bouvier, 1905 accepted as Ammothea clausi Pfeffer, 1889
• Ammothea australis (Hodgson, 1907) accepted as Ammothea clausi Pfeffer, 1889
• Ammothea borealis Schimkewitsch, 1895 accepted as Achelia borealis (Schimkewitsch, 1895)
• Ammothea carolinensis Leach, 1814
• Ammothea charcoti (Bouvier, 1905) accepted as Ammothea carolinensis Leach, 1814
• Ammothea chelata Hilton, 1939 accepted as Achelia chelata (Hilton, 1939)
• Ammothea clausi Pfeffer, 1889
• Ammothea curculio Bouvier, 1906 accepted as Ammothea carolinensis Leach, 1814
• Ammothea cuspidata Hodgson, 1910 (uncertain > nomen dubium)
• Ammothea echinata Hodge, 1864 accepted as Achelia echinata Hodge, 1864
• Ammothea elongata Hilton, 1942 accepted as Achelia borealis (Schimkewitsch, 1895)
• Ammothea euchelata Hedgpeth, 1940 accepted as Achelia chelata (Hilton, 1939)
• Ammothea flynni (Marcus, 1940) accepted as Ammothea magniceps Thompson, 1884
• Ammothea gibbosa (Möbius, 1902) accepted as Ammothea carolinensis Leach, 1814
• Ammothea gracilipes Bouvier, 1911 accepted as Ammothea minor (Hodgson, 1907)
• Ammothea grande (Bouvier, 1906) accepted as Ammothea carolinensis Leach, 1814
• Ammothea grandis Pfeffer, 1889 accepted as Ammothea carolinensis Leach, 1814
• Ammothea grossifemora Hilton, 1942 accepted as Tanystylum grossifemorum (Hilton, 1942)
• Ammothea hilgendorfi (Böhm, 1879)
• Ammothea latifrons Cole, 1904 accepted as Achelia latifrons (Cole, 1904)
• Ammothea magniceps Thompson, 1884
• Ammothea marginatum (Cole, 1904) accepted as Ammothea hilgendorfi (Böhm, 1879)
• Ammothea megova Hilton, 1943 accepted as Achelia megova (Hilton, 1943)
• Ammothea minor (Hodgson, 1907)
• Ammothea nidiuscula Hall, 1913 accepted as Achelia alaskensis (Cole, 1904)
• Ammothea ovatus (Hilton, 1942) accepted as Ammothea hilgendorfi (Böhm, 1879)
• Ammothea ovatus Hilton, 1942 accepted as Ammothea hilgendorfi (Böhm, 1879)
• Ammothea ovosetosa Hilton, 1942 accepted as Achelia ovosetosa (Hilton, 1942)
• Ammothea quadridentata Hodgson, 1910 accepted as Achelia quadridentata (Hodgson, 1910)
• Ammothea simplissima Hilton, 1939 accepted as Achelia simplissima (Hilton, 1939)
• Ammothea spinoseta Hilton, 1939 accepted as Achelia spinoseta (Hilton, 1939)
• Ammothella appendiculata (Dohrn, 1881)
• Ammothella biunguiculata (Dohrn, 1881)
• Ammothella biunguiculata var. fusca Hilton, 1942 (uncertain > nomen dubium)
• Ammothella gertrudae Müller & Krapp, 2009
• Ammothella gibraltarensis Munilla, 1993
• Ammothella gigas Fage, 1956 accepted as Cilunculus sewelli Calman, 1938
• Ammothella hispida (Hodge, 1864) accepted as Achelia hispida Hodge, 1864
• Ammothella longioculata (Faraggiana, 1940)
• Ammothella longipes (Hodge, 1864)
• Ammothella magnirostris (Dohrn, 1881) accepted as Ammothella longipes (Hodge, 1864)
• Ammothella profunda Hedgpeth, 1949 accepted as Cilunculus profundus (Hedgpeth, 1949)
• Ammothella tubicen Stock, 1978
• Ammothella uniunguiculata (Dohrn, 1881)
• Anomorhynchus smithii Miers, 1881 accepted as Colossendeis proboscidea (Sabine, 1824)
• Anoplodactylus amora Bamber & Costa, 2009
• Anoplodactylus angulatus (Dohrn, 1881)
• Anoplodactylus angulirostris (Dohrn, 1881) accepted as Anoplodactylus angulatus (Dohrn, 1881)
• Anoplodactylus antillianus Stock, 1974 accepted as Anoplodactylus jonesi Child, 1974
• Anoplodactylus arnaudae Stock, 1978
• Anoplodactylus attenuatus Child, 1988 accepted as Anoplodactylus tenuicorpus Child, 1991
• Anoplodactylus australis (Hodgson, 1914)
• Anoplodactylus batangensis (Helfer, 1938)
• Anoplodactylus californicus Hall, 1912