Hormathiidae Carlgren, 1932

Aceractis Andres, 1883

Actinauge Verrill, 1883

Adamsia Forbes, 1840

Allantactis Danielssen, 1890

Amphianthus Hertwig, 1882

Amphiantus

Calliactis Verrill, 1869

Cataphellia Stephenson, 1931

Chitonactes

Chitonactis Fischer, 1874

Chitonanthus McMurrich, 1893

Chondrachtinia

Chondranthus Migot & Portmann, 1926

Chondrodactis Wassilieff, 1908

Chondrophellia Carlgren, 1925

Cricophorus Carlgren, 1924

Gephyra Koch, 1878

Gephyropsis Carlgren, 1925

Gliactis Gravier, 1918

Gliatactis

Helaria Stechow, 1921

Heliactis Thompson, 1858

Hormathia Gosse, 1859

Hormathianthus Carlgren, 1943

Korenia Danielssen, 1890

Leptoteichus Stephenson, 1918

Lilliella Stephenson, 1918

Medusa Linnaeus, 1758

Monactis Riemann-Zurneck, 1986

Paracalliactis Carlgren, 1928

Paractinia Andres, 1883

Paraphellia Haddon, 1889

Paraphelliactis Carlgren, 1928

Phelliactis Simon, 1892

Raphactis Verrill, 1899

Stelidiactis Danielssen, 1890

Stephanactis Verrill, 1869

Stephanauge Verrill, 1899

Stephanthus Rodríguez & López-González, 2003

Stilidiacis