• Halocynthia Verrill, 1879
• Halocynthia arabica Monniot C., 1965 accepted as Halocynthia spinosa Sluiter, 1905
• Halocynthia arctica (Hartmeyer, 1899) accepted as Boltenia echinata (Linnaeus, 1767)
• Halocynthia aurantium (Pallas, 1787)
• Halocynthia aurantium aurantium (Pallas, 1787)
• Halocynthia aurantium pyriformis Kott, 1968
• Halocynthia aurantium typica Kott, 1968 accepted as Halocynthia aurantium aurantium (Pallas, 1787)
• Halocynthia breviramosa Sluiter, 1904
• Halocynthia cactus (Oka, 1932)
• Halocynthia carnleyensis Bovien, 1921 accepted as Pyura trita (Sluiter, 1900)
• Halocynthia castaneiformis (Drasche, 1884) accepted as Boltenia villosa (Stimpson, 1864)
• Halocynthia cerebriformis (Herdman, 1881) accepted as Pyura spinosa (Quoy & Gaimard, 1834)
• Halocynthia chilensis (Molina, 1782) accepted as Pyura chilensis Molina, 1782
• Halocynthia comma Hartmeyer, 1906 accepted as Pyura comma (Hartmeyer, 1906)
• Halocynthia deani (Ritter, 1900) accepted as Halocynthia aurantium (Pallas, 1787)
• Halocynthia defectiva Millar, 1962 accepted as Halocynthia spinosa Sluiter, 1905
• Halocynthia discoveryi Herdman, 1910 accepted as Pyura discoveryi (Herdman, 1910)
• Halocynthia dumosa (Stimpson, 1855)
• Halocynthia echinata (Linnaeus, 1767) accepted as Boltenia echinata (Linnaeus, 1767)
• Halocynthia flynni Herdman, 1923 (uncertain > nomen dubium)
• Halocynthia gangelion (Savigny, 1816) accepted as Pyura gangelion (Savigny, 1816)
• Halocynthia grandis (Heller, 1878) accepted as Herdmania grandis (Heller, 1878)
• Halocynthia haustor (Stimpson, 1864) accepted as Pyura haustor (Stimpson, 1864)
• Halocynthia hilgendorfi (Traustedt, 1885)
• Halocynthia hispida (Herdman, 1881) accepted as Halocynthia dumosa (Stimpson, 1855)
• Halocynthia hystrix Oka, 1930 accepted as Pyura sacciformis (Drasche, 1884)
• Halocynthia igaboja Oka, 1906
• Halocynthia igaguri Tokioka, 1953
• Halocynthia jacatrensis (Sluiter, 1890) accepted as Pyura arenosa (Herdman, 1881)
• Halocynthia jakoboja Oka, 1906 accepted as Halocynthia igaboja Oka, 1906
• Halocynthia johnsoni Ritter, 1909 accepted as Pyura haustor (Stimpson, 1864)
• Halocynthia jokoboja Oka, 1906 accepted as Pyura sacciformis (Drasche, 1884)
• Halocynthia karasboja Oka, 1906 accepted as Pyura vittata (Stimpson, 1852)
• Halocynthia michaelseni Oka, 1906 accepted as Pyura sacciformis (Drasche, 1884)
• Halocynthia microspinosa (Van Name, 1921)
• Halocynthia mirabilis (Drasche, 1884) accepted as Herdmania mirabilis (Drasche, 1884)
• Halocynthia momus (Savigny, 1816) accepted as Herdmania momus (Savigny, 1816)
• Halocynthia okai Ritter, 1907
• Halocynthia owstoni Oka, 1906 accepted as Halocynthia igaboja Oka, 1906
• Halocynthia paessleri (Michaelsen, 1900) accepted as Pyura paessleri (Michaelsen, 1900)
• Halocynthia pallida (Heller, 1878) accepted as Herdmania pallida (Heller, 1878)
• Halocynthia papillosa (Linnaeus, 1767)
• Halocynthia partita (Stimpson, 1852) accepted as Styela canopus (Savigny, 1816)
• Halocynthia polycarpa Sluiter, 1904 accepted as Pyura polycarpa (Sluiter, 1904)
• Halocynthia pulchella (Verrill, 1871) accepted as Dendrodoa pulchella (Rathke, 1806)
• Halocynthia pyriformis (Rathke, 1806)
• Halocynthia riiseana (Traustedt, 1883) accepted as Pyura vittata (Stimpson, 1852)
• Halocynthia riiseana var. munita Van Name, 1902 accepted as Pyura munita (Van Name, 1902)
• Halocynthia ritteri (Oka, 1906) accepted as Halocynthia igaboja Oka, 1906
• Halocynthia roretzi (Drasche, 1884)
• Halocynthia rubrilabia Rennie & Wiseman, 1906 (uncertain > nomen dubium)
• Halocynthia rustica (Linnaeus, 1767) accepted as Styela rustica Linnaeus, 1767
• Halocynthia sanderi (Traustedt & Weltner, 1894) accepted as Pyura sacciformis (Drasche, 1884)
• Halocynthia setosa Sluiter, 1905 accepted as Pyura setosa (Sluiter, 1905)
• Halocynthia simaensis Tokioka, 1949
• Halocynthia spinosa Sluiter, 1905
• Halocynthia stubenrauchi (Michaelsen, 1900) accepted as Pyura stubenrauchi (Michaelsen, 1900)
• Halocynthia superba (Ritter, 1900) accepted as Halocynthia aurantium (Pallas, 1787)
• Halocynthia transversaria Sluiter, 1904 accepted as Boltenia transversaria (Sluiter, 1904)
• Halocynthia tuberculum Verrill, 1879 accepted as Styela coriacea (Alder & Hancock, 1848)
• Halocynthia turboga (Oka, 1929)
• Halocynthia vanhaffeni Michaelsen, 1904 accepted as Pyura stolonifera (Heller, 1878)
• Halocynthia vanhoeffeni Michaelsen, 1904 accepted as Pyura stolonifera (Heller, 1878)
• Halocynthia vanhoffeni Michaelsen, 1904 accepted as Pyura stolonifera (Heller, 1878)
• Halocynthia villosa (Stimpson, 1864) accepted as Boltenia villosa (Stimpson, 1864)
• Halocynthia washingtonia Ritter, 1913 accepted as Pyura haustor (Stimpson, 1864)