• Brachidontes (Hormomya) Mörch, 1853 accepted as Brachidontes Swainson, 1840
• Brachidontes (Hormomya) armoricensis (Cossmann, 1905) † accepted as Brachidontes armoricensis (Cossmann, 1905) †
• Brachidontes (Hormomya) biochii (Deshayes, 1866) † accepted as Brachidontes biochii (Deshayes, 1866) †
• Brachidontes (Hormomya) catalaunensis (Cossmann, 1896) † accepted as Brachidontes catalaunensis (Cossmann, 1896) †
• Brachidontes (Hormomya) dutemplei (Deshayes, 1858) † accepted as Brachidontes dutemplei (Deshayes, 1858) †
• Brachidontes (Hormomya) karachiensis Melvill & Standen, 1907 accepted as Brachidontes pharaonis (P. Fischer, 1870)
• Brachidontes (Hormomya) levesauei (Deshayes, 1858) † accepted as Brachidontes levesauei (Deshayes, 1858) †
• Brachidontes (Hormomya) rigaulti (Deshayes, 1858) † accepted as Brachidontes rigaulti (Deshayes, 1858) †
• Brachydontes (Hormomya) Mörch, 1853 accepted as Septifer Récluz, 1848
• Brachydontes (Hormomya) ramulosus Viader, 1951 accepted as Septifer ramulosus (Viader, 1951)
• Brachydontes (Hormomya) rufolineatus E. A. Smith, 1911 accepted as Septifer rufolineatus (E. A. Smith, 1911)
• Brachyodontes (Hormomya) Mörch, 1853 accepted as Brachidontes Swainson, 1840
• Brachyodontes (Hormomya) blakeanus Melvill & Standen, 1914 accepted as Philobrya blakeana (Melvill & Standen, 1914)
• Brachyodontes (Hormomya) karachiensis Melvill & Standen, 1907 accepted as Brachidontes crebristriatus (Conrad, 1837)
• Hormomya Mörch, 1853 accepted as Brachidontes Swainson, 1840
• Hormomya mutabilis (Gould, 1861) accepted as Brachidontes mutabilis (A. Gould, 1861)
• Hormomya sinensis Z.-R. Wang, 1983 accepted as Brachidontes crebristriatus (Conrad, 1837)
• Hormomya willetsi (Marwick, 1928) † accepted as Brachidontes willetsi (Marwick, 1928) †
• Mytilus (Hormomya) Mörch, 1853 accepted as Brachidontes Swainson, 1840
• Mytilus (Hormomya) puntarenensis Pilsbry & H. N. Lowe, 1932 accepted as Brachidontes puntarenensis (Pilsbry & H. N. Lowe, 1932)