1. Species Ammothea acheliata Child, 1998
2. Species Ammothea adunca Child, 1994
3. Species Ammothea allopodes Fry & Hedgpeth, 1969
4. Species Ammothea antipodensis Clark, 1972
5. Species Ammothea armentis Child, 1994
6. Species Ammothea australiensis (Flynn, 1919)
7. Species Ammothea bentartica Munilla, 2001
8. Species Ammothea bicorniculata Stiboy-Risch, 1992
9. Species Ammothea bigibbosa Munilla & Ramos, 2005
10. Species Ammothea calmani Gordon, 1932
11. Species Ammothea carolinensis Leach, 1814
12. Species Ammothea childi Cano & López-González, 2013
13. Species Ammothea clausi Pfeffer, 1889
14. Species Ammothea depolaris Stock, 1966
15. Species Ammothea dorsiplicata (Hilton, 1943)
16. Species Ammothea gigantea Gordon, 1932
17. Species Ammothea glacialis (Hodgson, 1907)
18. Species Ammothea gordonae Child, 1994
19. Species Ammothea hedgpethi (Utinomi, 1959)
20. Species Ammothea hesperidensis Munilla, 2000
21. Species Ammothea hilgendorfi (Böhm, 1879)
22. Species Ammothea insularis Child, 1992
23. Species Ammothea longispina Gordon, 1932
24. Species Ammothea magniceps Thompson, 1884
25. Species Ammothea makara Clark, 1977
26. Species Ammothea meridionalis Hodgson, 1914
27. Species Ammothea minor (Hodgson, 1907)
28. Species Ammothea ovatoides Stock, 1973
29. Species Ammothea profunda Losina-Losinsky, 1961
30. Species Ammothea pseudospinosa Cano & López-González, 2013
31. Species Ammothea sextarticulata Munilla, 1991
32. Species Ammothea spicula Nakamura & Child, 1983
33. Species Ammothea spinosa (Hodgson, 1907)
34. Species Ammothea striata (Möbius, 1902)
35. Species Ammothea stylirostris Gordon, 1932
36. Species Ammothea tetrapora Gordon, 1932
37. Species Ammothea tibialis Munilla, 2002
38. Species Ammothea uru Clark, 1977
39. Species Ammothea victoriae Cano & López-González, 2007
40. Subgenus Ammothea (Achelia) accepted as Achelia Hodge, 1864 (unaccepted > superseded rank)
    1. Species Ammothea (Achelia) armata Bouvier, 1916 accepted as Achelia armata Bouvier, 1916 (unaccepted > superseded rank)
41. Subgenus Ammothea (Ammothella) Verril, 1900 accepted as Ammothella Verrill, 1900 (unaccepted > superseded rank, raised to genus)
    1. Species Ammothea (Ammothella) rugulosa Verrill, 1900 accepted as Ammothella rugulosa Verrill, 1900 (unaccepted > superseded combination)
42. Species Ammothea achelioides Wilson, 1878 accepted as Achelia spinosa (Stimpson, 1853)
43. Species Ammothea alaskensis Cole, 1904 accepted as Achelia alaskensis (Cole, 1904) (unaccepted > superseded combination)
44. Species Ammothea antarctica Bouvier, 1905 accepted as Ammothea clausi Pfeffer, 1889
45. Species Ammothea appendiculata Dohrn, 1881 accepted as Ammothella appendiculata (Dohrn, 1881) (unaccepted > superseded combination)
46. Species Ammothea australis (Hodgson, 1907) accepted as Ammothea clausi Pfeffer, 1889
47. Species Ammothea borealis Schimkewitsch, 1895 accepted as Achelia borealis (Schimkewitsch, 1895) (unaccepted > superseded combination, superseded to Achelia borealis (Schimkewitsch, 1895))
48. Species Ammothea brevicauda Loman, 1904 accepted as Achelia brevicauda (Loman, 1904)
49. Species Ammothea brevipes Hodge, 1864 accepted as Achelia echinata Hodge, 1864 (junior synonym)
50. Species Ammothea charcoti (Bouvier, 1905) accepted as Ammothea carolinensis Leach, 1814
51. Species Ammothea chelata Hilton, 1939 accepted as Achelia chelata (Hilton, 1939)
52. Species Ammothea cooki Child, 1987 sensu Munilla & Soler Membrives, 2008 accepted as Ascorhynchus cooki Child, 1987 (Mistake in genus)
53. Species Ammothea curculio Bouvier, 1906 accepted as Ammothea carolinensis Leach, 1814
54. Species Ammothea dubia (Hedgpeth, 1950) accepted as Boehmia dubia Hedgpeth, 1950
55. Species Ammothea echinata Hodge, 1864 accepted as Achelia echinata Hodge, 1864 (wrong genus)
56. Species Ammothea echinata Losina-Losinsky, 1933 accepted as Achelia echinata Hodge, 1864
57. Species Ammothea elongata Hilton, 1942 accepted as Achelia borealis (Schimkewitsch, 1895)
58. Species Ammothea euchelata Hedgpeth, 1940 accepted as Achelia chelata (Hilton, 1939) (Junior synonym)
59. Species Ammothea flynni (Marcus, 1940) accepted as Ammothea magniceps Thompson, 1884
60. Species Ammothea gibbosa Bouvier, 1913 accepted as Ammothea carolinensis Leach, 1814 (junior synonym)
61. Species Ammothea gibbosa (Möbius, 1902) accepted as Ammothea carolinensis Leach, 1814
62. Species Ammothea gracilipes Bouvier, 1911 accepted as Ammothea minor (Hodgson, 1907)
63. Species Ammothea grande (Bouvier, 1906) accepted as Ammothea carolinensis Leach, 1814
64. Species Ammothea grandis Pfeffer, 1889 accepted as Ammothea carolinensis Leach, 1814
65. Species Ammothea grossifemora Hilton, 1942 accepted as Tanystylum grossifemorum (Hilton, 1942)
66. Species Ammothea latifrons Cole, 1904 accepted as Achelia latifrons (Cole, 1904)
67. Species Ammothea lavrentii Losina-Losinsky, 1933 accepted as Achelia lavrentii (Losina-Losinsky, L.K., 1933) accepted as Achelia spinosa (Stimpson, 1853)
68. Species Ammothea litke Losina-Losinsky, 1933 accepted as Achelia litke (Losina-Losinsky, L.K., 1933) accepted as Achelia spinosa (Stimpson, 1853)
69. Species Ammothea longipes Hodge, 1864 accepted as Ammothella longipes (Hodge, 1864) (synonym)
70. Species Ammothea magnirostris Dohrn, 1881 accepted as Ammothella magnirostris (Dohrn, 1881) accepted as Ammothella longipes (Hodge, 1864) (unaccepted > superseded combination)
71. Species Ammothea marginatum (Cole, 1904) accepted as Ammothea hilgendorfi (Böhm, 1879) (Synonym)
72. Species Ammothea megova Hilton, 1943 accepted as Achelia megova (Hilton, 1943)
73. Species Ammothea nana Loman, 1908 accepted as Achelia nana (Loman, 1908)
74. Species Ammothea nidiuscula Hall, 1913 accepted as Achelia alaskensis (Cole, 1904)
75. Species Ammothea ovatus (Hilton, 1942) accepted as Ammothea hilgendorfi (Böhm, 1879) (Junior synonym)
76. Species Ammothea ovatus Hilton, 1942 accepted as Ammothea hilgendorfi (Böhm, 1879)
77. Species Ammothea ovosetosa Hilton, 1942 accepted as Achelia ovosetosa (Hilton, 1942)
78. Species Ammothea quadridentata Hodgson, 1910 accepted as Achelia quadridentata (Hodgson, 1910)
79. Species Ammothea sexarticulata Munilla, 1990 accepted as Ammothea sextarticulata Munilla, 1991 (Misspelling)
80. Species Ammothea simplex Giltay, 1934 accepted as Achelia simplex (Giltay, 1934) (wrong genus)
81. Species Ammothea simplissima Hilton, 1939 accepted as Achelia simplissima (Hilton, 1939)
82. Species Ammothea spinoseta Hilton, 1939 accepted as Achelia spinoseta (Hilton, 1939)
83. Species Ammothea spinosissima Hall, 1912 accepted as Nymphopsis spinosissima (Hall, H.V.M., 1912) accepted as Nymphopsis spinosissimum (Hall, 1912)
84. Species Ammothea uni-unguiculata Dohrn, 1881 accepted as Ammothella uniunguiculata (Dohrn, 1881) (unaccepted > superseded combination)
85. Species Ammothea uschakovi Losina-Losinsky, 1933 accepted as Achelia uschakovi Losina-Losinsky L.K., 1933 accepted as Achelia spinosa (Stimpson, 1853)
86. Species Ammothea verenae Child, 1987 accepted as Sericosura verenae (Child, 1987)
87. Species Ammothea wilsoni Schimkewitsch, 1887 accepted as Achelia wilsoni (Schimkewitsch, 1890) accepted as Achelia assimilis (Haswell, 1885)
88. Species Ammothea cuspidata Hodgson, 1910 (uncertain > nomen dubium)

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