Bifrontia conoidea Cossmann, 1882 † accepted as Omalaxis conoideus (Cossmann, 1882) †
Bifrontia deshayesii Potiez & Michaud, 1838 † accepted as Omalaxis deshayesii (Potiez & Michaud, 1838) †
Bifrontia pernambucensis R. B. Watson, 1886 accepted as Lyocyclus pernambucensis (R. B. Watson, 1886)
Bifrontia serrata Deshayes, 1832 † accepted as Omalaxis serratus (Deshayes, 1832) †
Bifrontia spirata de Raincourt, 1876 † accepted as Omalaxis spiratus (de Raincourt, 1876) †
Bifrontia zanclaea R. A. Philippi, 1844 accepted as Pseudomalaxis zanclaeus (R. A. Philippi, 1844)
Homalaxis cornuammonis Melvill & Standen, 1903 accepted as Spirolaxis cornuammonis (Melvill & Standen, 1903)
Homalaxis helicoides Cossmann & Pissarro, 1902 † accepted as Omalaxis helicoides (Cossmann & Pissarro, 1902) †
Homalaxis praemeridionalis Chapman, 1912 † accepted as Pseudomalaxis praemeridionalis (Chapman, 1912) †
Homalaxis rotulacatharinea Melvill & Standen, 1903 accepted as Spirolaxis rotulacatharinea (Melvill & Standen, 1903)