• Demonax Kinberg, 1867 accepted as Parasabella Bush, 1905
• Demonax aberrans (Augener, 1926) accepted as Parasabella aberrans (Augener, 1926)
• Demonax albicans (Johansson, 1922) accepted as Parasabella albicans (Johansson, 1922)
• Demonax aulaconota (Marenzeller, 1884) accepted as Parasabella aulaconota (Marenzeller, 1884)
• Demonax brachychona (Claparède, 1870) accepted as Parasabella saxicola (Grube, 1861)
• Demonax branchyona [Auctt.] accepted as Demonax brachychona (Claparède, 1870) accepted as Parasabella saxicola (Grube, 1861)
• Demonax brevithoracicus (Pillai, 1961) accepted as Parasabella brevithoracica (Pillai, 1961)
• Demonax cambrensis Knight-Jones & Walker, 1985 accepted as Parasabella cambrensis (Knight-Jones & Walker, 1985)
• Demonax columbi (Kinberg, 1867) accepted as Parasabella columbi (Kinberg, 1867)
• Demonax cooki Kinberg, 1867 accepted as Parasabella leucaspis (Kinberg, 1867)
• Demonax fernandezensis (Augener, 1922) accepted as Parasabella fernandezensis (Augener, 1922)
• Demonax fullo (Grube, 1878) accepted as Parasabella fullo (Grube, 1878)
• Demonax incertus Kinberg, 1866 accepted as Parasabella leucaspis (Kinberg, 1867)
• Demonax jamaicensis (Augener, 1922) accepted as Parasabella jamaicensis Augener, 1922
• Demonax japonicus (Moore & Bush, 1904) accepted as Parasabella japonica (Moore & Bush, 1904)
• Demonax krusensterni Kinberg, 1867 accepted as Parasabella leucaspis (Kinberg, 1867)
• Demonax lacunosus Perkins, 1984 accepted as Parasabella lacunosa (Perkins, 1984)
• Demonax langerhansi Knight-Jones, 1983 accepted as Parasabella langerhansi (Knight-Jones, 1983)
• Demonax leucaspis Kinberg, 1867 accepted as Parasabella leucaspis (Kinberg, 1867)
• Demonax medius (Bush, 1905) accepted as Parasabella media Bush, 1905
• Demonax microphthalmus (Verrill, 1873) accepted as Parasabella microphthalma (Verrill, 1873)
• Demonax oculeus (Pillai, 1965) accepted as Parasabella oculea (Pillai, 1965)
• Demonax pallidus (Moore, 1923) accepted as Parasabella pallida Moore, 1923
• Demonax polarsterni Gambi, Patti, Micaletto & Giangrande, 2001 accepted as Parasabella polarsterni (Gambi, Patti, Micaletto & Giangrande, 2001)
• Demonax puncturatus Augener, 1918 accepted as Euratella puncturata (Augener, 1918)
• Demonax rufovittata (Grube, 1881) accepted as Parasabella rufovittata (Grube, 1881)
• Demonax rugosus (Moore, 1904) accepted as Parasabella rugosa (Moore, 1904)
• Demonax saxicola (Grube, 1861) accepted as Parasabella saxicola (Grube, 1861)
• Demonax tenuicollaris (Grube, 1870) accepted as Parasabella tenuicollaris (Grube, 1861)
• Demonax tilosaulus (Schmarda, 1861) accepted as Notaulax tilosaula (Schmarda, 1861)
• Demonax tommasi Giangrande, 1994 accepted as Parasabella tommasi (Giangrande, 1994)
• Demonax torulis Knight-Jones & Walker, 1985 accepted as Parasabella torulis (Knight-Jones & Walker, 1985)
• Sabella (Demonax) [sensu Banse, 1979] accepted as Parasabella Bush, 1905
• Sabella (Demonax) media (Bush, 1905) accepted as Parasabella media Bush, 1905
• Sabella (Demonax) pacifica (Berkeley & Berkeley, 1954) accepted as Bispira pacifica (Berkeley & Berkeley, 1954)