1. Species Benthesicymus crenatus Spence Bate, 1881
2. Species Benthesicymus laciniatus Rathbun, 1906
3. Species Benthesicymus altus Spence Bate, 1881 accepted as Dalicaris altus (Spence Bate, 1881) (unaccepted > superseded combination)
4. Species Benthesicymus armatus MacGilchrist, 1905 accepted as Bathicaris iridescens (Spence Bate, 1881) (unaccepted > junior subjective synonym)
5. Species Benthesicymus bartletti Smith, 1882 accepted as Benthoecetes bartletti (Smith, 1882) (unaccepted > superseded combination)
6. Species Benthesicymus brasiliensis Spence Bate, 1881 accepted as Bathicaris brasiliensis (Spence Bate, 1881) (unaccepted > superseded combination)
7. Species Benthesicymus brevirostris Kikuchi & Nemoto, 1991 accepted as Altelatipes brevirostris (Kikuchi & Nemoto, 1991)
8. Species Benthesicymus carinatus Smith, 1884 accepted as Altelatipes carinatus (Smith, 1884) (unaccepted > superseded combination)
9. Species Benthesicymus cereus Burkenroad, 1936 accepted as Bathicaris cereus (Burkenroad, 1936) (unaccepted > superseded combination)
10. Species Benthesicymus expansus Kensley, 1977 accepted as Altelatipes carinatus (Smith, 1884) (unaccepted > junior subjective synonym)
11. Species Benthesicymus hjorti Sund, 1920 accepted as Benthesicymus laciniatus Rathbun, 1906 (unaccepted > junior subjective synonym)
12. Species Benthesicymus howensis Dall, 2001 accepted as Bathicaris iridescens (Spence Bate, 1881) (unaccepted > superseded combination)
13. Species Benthesicymus investigatoris Alcock & Anderson, 1899 accepted as Maorrancaris investigatoris (Alcock & Anderson, 1899) (unaccepted > superseded combination)
14. Species Benthesicymus iridescens Spence Bate, 1881 accepted as Bathicaris iridescens (Spence Bate, 1881) (unaccepted > superseded combination)
15. Species Benthesicymus longipes Bouvier, 1906 accepted as Bathicaris iridescens (Spence Bate, 1881) (unaccepted > junior subjective synonym)
16. Species Benthesicymus mollis Spence Bate, 1888 accepted as Benthesicymus iridescens Spence Bate, 1881 accepted as Bathicaris iridescens (Spence Bate, 1881) (unaccepted > junior subjective synonym)
17. Species Benthesicymus moratus Smith, 1886 accepted as Benthesicymus brasiliensis Spence Bate, 1881 accepted as Bathicaris brasiliensis (Spence Bate, 1881) (unaccepted > junior subjective synonym)
18. Species Benthesicymus pleocanthus Spence Bate, 1888 accepted as Benthesicymus bartletti Smith, 1882 accepted as Benthoecetes bartletti (Smith, 1882) (unaccepted > junior subjective synonym)
19. Species Benthesicymus seymouri Tirmizi, 1960 accepted as Bathicaris seymouri (Tirmizi, 1960) (unaccepted > superseded combination)
20. Species Benthesicymus strabus Burkenroad, 1936 accepted as Bathicaris strabus (Burkenroad, 1936) (unaccepted > superseded combination)
21. Species Benthesicymus tanneri Faxon, 1893 accepted as Benthoecetes tanneri (Faxon, 1893) (unaccepted > superseded combination)
22. Species Benthesicymus tirmiziae Crosnier, 1978 accepted as Benthoecetes tirmizae (Crosnier, 1978) (unaccepted > superseded combination)
23. Species Benthesicymus urinator Burkenroad, 1936 accepted as Bathicaris urinator (Burkenroad, 1936) (unaccepted > superseded combination)

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