1. Species Barbatia (Acar) aceraea Melvill & Standen, 1899 accepted as Mulinarca aceraea (Melvill & Standen, 1899) (basionym)
2. Species Barbatia (Acar) agulhasensis (Thiele, 1931) accepted as Acar agulhasensis (Thiele, 1931)
3. Species Barbatia (Acar) avellanaria Melvill, 1907 accepted as Bentharca avellanaria (Melvill, 1907) (unaccepted > superseded combination)
4. Species Barbatia (Acar) gunsoni Darragh & G. W. Kendrick, 1980 † accepted as Acar gunsoni (Darragh & G. W. Kendrick, 1980) † (unaccepted > superseded combination)
5. Species Barbatia (Acar) hennigi Heinberg, 1978 † accepted as Bentharca hennigi (Heinberg, 1978) † (unaccepted > superseded combination)
6. Species Barbatia (Acar) lamellosa (Deshayes, 1858) † accepted as Acar lamellosa (Deshayes, 1858) † (unaccepted > superseded combination)
7. Species Barbatia (Acar) laminata Angas, 1865 accepted as Acar squamosa (Lamarck, 1819) (unaccepted > junior subjective synonym)
8. Species Barbatia (Acar) margarethae Melvill, 1907 accepted as Arcopsis sculptilis (Reeve, 1844) (unaccepted > junior subjective synonym)
9. Species Barbatia (Acar) milifilia [sic] † accepted as Barbatia (Acar) millifila (Dall, 1903) † accepted as Acar millifila (Dall, 1903) † (unaccepted > misspelling - incorrect subsequent spelling)
10. Species Barbatia (Acar) millifila (Dall, 1903) † accepted as Acar millifila (Dall, 1903) † (unaccepted > superseded combination)
11. Species Barbatia (Acar) petasion Kilburn, 1983 accepted as Acar petasion (Kilburn, 1983) (basionym)
12. Species Barbatia (Acar) plicata (Dillwyn, 1817) accepted as Acar plicata (Dillwyn, 1817) (superseded combination)
13. Species Barbatia (Acar) putealis Cox, 1952 † accepted as Acar putealis (Cox, 1952) † (unaccepted > superseded combination)
14. Species Barbatia (Acar) reticulata (Gmelin, 1791) accepted as Acar reticulata (Gmelin, 1791) (unaccepted > superseded combination)
15. Species Barbatia (Acar) rostae S. S. Berry, 1954 accepted as Acar rostae (S. S. Berry, 1954) (original combination)
16. Species Barbatia (Acar) salebrosus Garvie, 1996 † accepted as Acar salebrosus (Garvie, 1996) † (unaccepted > superseded combination)
17. Species Barbatia (Acar) scaberrima Cossmann, 1908 † accepted as Acar scaberrima (Cossmann, 1908) † (unaccepted > superseded combination)
18. Species Barbatia (Acar) whangaensis Marwick, 1928 † accepted as Acar whangaensis (Marwick, 1928) † (superseded combination)
19. Species Barbatia (Acar) aclinensis H. I. Tucker & D. Wilson, 1933 † (uncertain > unassessed)
20. Species Barbatia (Acar) penjicus Sinelnikova, 1997 † (uncertain > unassessed)
21. Species Barbatia (Acar) reinharti Effinger, 1938 † (uncertain > unassessed)

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