• Stylactaria Stechow, 1921 accepted as Stylactis Allman, 1864
• Stylactaria arctica (Jäderholm, 1902) accepted as Hydractinia arctica (Jäderholm, 1902)
• Stylactaria arge (Clarke, 1882) accepted as Hydractinia arge (Clarke, 1882)
• Stylactaria betkensis (Watson, 1978) accepted as Hydractinia betkensis (Watson, 1978)
• Stylactaria brachyurae (Hirohito, 1988) accepted as Hydractinia brachyurae (Hirohito, 1988)
• Stylactaria carcinicola (Hiro, 1939) accepted as Bouillonactinia carcinicola (Hiro, 1939)
• Stylactaria claviformis (Bouillon, 1965) accepted as Hydractinia proboscidea (Hincks, 1868)
• Stylactaria fucicola (M. Sars, 1857) accepted as Stylactis fucicola (M. Sars, 1857)
• Stylactaria hooperii (Sigerfoos, 1899) accepted as Bouillonactinia hooperii (Sigerfoos, 1899)
• Stylactaria inabai (Hirohito, 1988) accepted as Hydractinia inabai (Hirohito, 1988) accepted as Bouillonactinia misakiensis (Iwasa, 1934)
• Stylactaria inermis (Allman, 1872) accepted as Stylactis inermis Allman, 1872
• Stylactaria mar Gasca & Calder, 1993 accepted as Hydractinia mar (Gasca & Calder, 1993)
• Stylactaria misakinensis (Iwasa, 1934) accepted as Bouillonactinia misakiensis (Iwasa, 1934)
• Stylactaria multigranosi Namikawa, 1991 accepted as Bouillonactinia multigranosi (Namikawa, 1991)
• Stylactaria munita Calder, 2010 accepted as Hydractinia munita (Calder, 2010)
• Stylactaria otagoensis Schuchert, 1996 accepted as Hydractinia otagoensis (Schuchert, 1996)
• Stylactaria piscicola (Komai, 1932) accepted as Hydractinia piscicola (Komai, 1932)
• Stylactaria spinipapillaris (Hirohito, 1988) accepted as Hydractinia spinipapillaris (Hirohito, 1988)
• Stylactaria uchidai (Yamada, 1947) accepted as Stylactis uchidai Yamada, 1947 accepted as Schuchertinia uchidai (Yamada, 1947)