1. Species Halicarcinus cookii (Filhol, 1885)
2. Species Halicarcinus ovatus Stimpson, 1858
3. Species Halicarcinus planatus (Fabricius, 1775)
4. Species Halicarcinus quoyi (H. Milne Edwards, 1853)
5. Species Halicarcinus tongi Melrose, 1975
6. Species Halicarcinus varius (Dana, 1851)
7. Species Halicarcinus whitei (Miers, 1876)
8. Species Halicarcinus afecundus Lucas, 1981 accepted as Micas afecundus (Lucas, 1981) (unaccepted > superseded combination)
9. Species Halicarcinus bedfordi Montgomery, 1931 accepted as Lucascinus bedfordi (Montgomery, 1931) (unaccepted > superseded combination)
10. Species Halicarcinus coralicola (Rathbun, 1909) accepted as Lucascinus coralicola (Rathbun, 1909) (unaccepted > superseded combination)
11. Species Halicarcinus filholi (De Man, 1888) accepted as Micas filholi (De Man, 1888) (unaccepted > superseded combination)
12. Species Halicarcinus ginowan Naruse & Komai, 2009 accepted as Culexisoma ginowan (Naruse & Komai, 2009) (unaccepted > superseded combination)
13. Species Halicarcinus hondai (Takeda & Miyake, 1971) accepted as Rhynchoplax hondai Takeda & Miyake, 1971 (unaccepted > superseded combination)
14. Species Halicarcinus Huttoni Filhol, 1885 accepted as Halicarcinus quoyi (H. Milne Edwards, 1853) (unaccepted > junior subjective synonym)
15. Species Halicarcinus innominata Richardson, 1949 accepted as Halicarcinus quoyi (H. Milne Edwards, 1853) (unaccepted > nomen nudum)
16. Species Halicarcinus innominatus Richardson, 1949 accepted as Halicarcinus innominata Richardson, 1949 accepted as Halicarcinus quoyi (H. Milne Edwards, 1853) (unaccepted > misspelling - incorrect subsequent spelling)
17. Species Halicarcinus keijibabai (Takeda & Miyake, 1971) accepted as Lucascinus keijibabai (Takeda & Miyake, 1971)
18. Species Halicarcinus krefftii (Hess, 1865) accepted as Halicarcinus ovatus Stimpson, 1858
19. Species Halicarcinus leachi Guérin, 1832 accepted as Halicarcinus planatus (Fabricius, 1775) (unaccepted > junior subjective synonym, unjustified emendation)
20. Species Halicarcinus longipes Yang & Sun, 1998 accepted as Stimpsoplax longipes (Yang & Sun, 1998) (unaccepted > superseded combination)
21. Species Halicarcinus lucasi Richer de Forges, 1993 accepted as Micas lucasi (Richer de Forges, 1993) (unaccepted > superseded combination)
22. Species Halicarcinus messor (Stimpson, 1858) accepted as Rhynchoplax messor Stimpson, 1858 (unaccepted > superseded combination)
23. Species Halicarcinus minutus (A. Milne-Edwards, 1873) accepted as Micas minutus (A. Milne-Edwards, 1873) (unaccepted > superseded combination)
24. Species Halicarcinus nuytsi Hale, 1927 accepted as Halicarcinides nuytsi (Hale, 1927) (unaccepted > superseded combination)
25. Species Halicarcinus orientalis Sakai, 1932 accepted as Neohymenicus orientalis (Sakai, 1932) (unaccepted > superseded combination)
26. Species Halicarcinus pubescens Dana, 1851 accepted as Halicarcinus planatus (Fabricius, 1775) (unaccepted > junior subjective synonym)
27. Species Halicarcinus rostratus (Haswell, 1881) accepted as Nasutoplax rostrata (Haswell, 1881)
28. Species Halicarcinus septentrionalis Yokoya, 1928 accepted as Lucascinus coralicola (Rathbun, 1909) (unaccepted > junior subjective synonym)
29. Species Halicarcinus setirostris (Stimpson, 1858) accepted as Stimpsoplax setirostris (Stimpson, 1858)
30. Species Halicarcinus unidentatus Yang & Sun, 1998 accepted as Stimpsoplax unidentata (Yang & Sun, 1998) (unaccepted > superseded combination)
31. Species Halicarcinus yangi Shen, 1932 accepted as Stimpsoplax setirostris (Stimpson, 1858) (unaccepted > junior subjective synonym)

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