1. Subgenus Brachydontes (Hormomya) Mörch, 1853 accepted as Septifer Récluz, 1848
   1. Species Brachydontes (Hormomya) ramulosus Viader, 1951 accepted as Septifer ramulosus (Viader, 1951) (basionym)
   2. Species Brachydontes (Hormomya) rufolineatus E. A. Smith, 1911 accepted as Septifer rufolineatus (E. A. Smith, 1911) (basionym)
2. Species Brachydontes arabicus Jousseaume, 1919 accepted as Brachidontes pharaonis (P. Fischer, 1870) (unaccepted > unavailable name, established in synonymy)
3. Species Brachydontes clava Mörch, 1853 accepted as Geukensia demissa (Dillwyn, 1817) (unaccepted > junior subjective synonym)
4. Species Brachydontes emarginatus (Reeve, 1858) accepted as Dentimodiolus striatulus (Hanley, 1843) (unaccepted > junior subjective synonym)
5. Species Brachydontes granosissima G. B. Sowerby III, 1914 accepted as Geukensia granosissima (G. B. Sowerby III, 1914)
6. Species Brachydontes japonicus (Dunker, 1857) accepted as Arcuatula japonica (Dunker, 1857)
7. Species Brachydontes ramulosus Viader, 1951 accepted as Septifer ramulosus (Viader, 1951) (original combination)
8. Species Brachydontes recurvus (Rafinesque, 1820) accepted as Ischadium recurvum (Rafinesque, 1820) (unaccepted > superseded combination)
9. Species Brachydontes rufolineatus E. A. Smith, 1911 accepted as Brachidontes rufolineatus E. A. Smith, 1911 accepted as Septifer rufolineatus (E. A. Smith, 1911) (incorrect spelling of genus name)
10. Species Brachydontes submenkeanus (Tate, 1886) † accepted as Brachidontes submenkeanus (Tate, 1886) † (unaccepted > superseded combination)
11. Species Brachydontes penjicus Sinelnikova, 1997 † (uncertain > unassessed)

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