Halocynthia

Halocynthia is a genus of ascidian tunicates in the family Pyuridae. Species such as H. roretzi are eaten in parts of Asia as a delicacy.

Species within the genus Halocynthia include:
 * Halocynthia aurantium (Pallas, 1787)
 * Halocynthia breviramosa Sluiter, 1904
 * Halocynthia cactus (Oka, 1932)
 * Halocynthia dumosa (Stimpson, 1855)
 * Halocynthia hilgendorfi (Traustedt, 1885)
 * Halocynthia igaboja Oka, 1906
 * Halocynthia igaguri Tokioka, 1953
 * Halocynthia microspinosa (Van Name, 1921)
 * Halocynthia okai Ritter, 1907
 * Halocynthia papillosa (Linnaeus, 1767)
 * Halocynthia pyriformis (Rathke, 1806)
 * Halocynthia roretzi (Drasche, 1884)
 * Halocynthia simaensis Tokioka, 1949
 * Halocynthia spinosa Sluiter, 1905
 * Halocynthia turboga (Oka, 1929)

Species names currently considered to be synonyms:
 * Halocynthia arabica Monniot, 1965 : synonym of Halocynthia spinosa Sluiter, 1905
 * Halocynthia arctica (Hartmeyer, 1899) : synonym of Boltenia echinata (Linnaeus, 1767)
 * Halocynthia carnleyensis Bovien, 1921 : synonym of Pyura trita (Sluiter, 1900)
 * Halocynthia castaneiformis (Drasche, 1884) : synonym of Boltenia villosa (Stimpson, 1864)
 * Halocynthia cerebriformis (Herdman, 1881) : synonym of Pyura spinosa (Quoy & Gaimard, 1834)
 * Halocynthia chilensis (Molina, 1782) : synonym of Pyura chilensis Molina, 1782
 * Halocynthia comma Hartmeyer, 1906 : synonym of Pyura comma (Hartmeyer, 1906)
 * Halocynthia deani (Ritter, 1900) : synonym of Halocynthia aurantium (Pallas, 1787)
 * Halocynthia defectiva Millar, 1962 : synonym of Halocynthia spinosa Sluiter, 1905
 * Halocynthia discoveryi Herdman, 1910 : synonym of Pyura discoveryi (Herdman, 1910)
 * Halocynthia echinata (Linnaeus, 1767) : synonym of Boltenia echinata (Linnaeus, 1767)
 * Halocynthia gangelion (Savigny, 1816) : synonym of Pyura gangelion (Savigny, 1816)
 * Halocynthia grandis (Heller, 1878) : synonym of Herdmania grandis (Heller, 1878)
 * Halocynthia haustor (Stimpson, 1864) : synonym of Pyura haustor (Stimpson, 1864)
 * Halocynthia hispida (Herdman, 1881) : synonym of Halocynthia dumosa (Stimpson, 1855)
 * Halocynthia hystrix Oka, 1930 : synonym of Pyura sacciformis (Drasche, 1884)
 * Halocynthia jacatrensis (Sluiter, 1890) : synonym of Pyura arenosa (Herdman, 1882)
 * Halocynthia jakoboja Oka, 1906 : synonym of Halocynthia igaboja Oka, 1906
 * Halocynthia johnsoni Ritter, 1909 : synonym of Pyura haustor (Stimpson, 1864)
 * Halocynthia jokoboja Oka, 1906 : synonym of Pyura sacciformis (Drasche, 1884)
 * Halocynthia karasboja Oka, 1906 : synonym of Pyura vittata (Stimpson, 1852)
 * Halocynthia michaelseni Oka, 1906 : synonym of Pyura sacciformis (Drasche, 1884)
 * Halocynthia mirabilis (Drasche, 1884) : synonym of Herdmania mirabilis (Drasche, 1884)
 * Halocynthia momus (Savigny, 1816) : synonym of Herdmania momus (Savigny, 1816)
 * Halocynthia owstoni Oka, 1906 : synonym of Halocynthia igaboja Oka, 1906
 * Halocynthia paessleri (Michaelsen, 1900) : synonym of Pyura paessleri (Michaelsen, 1900)
 * Halocynthia pallida (Heller, 1878) : synonym of Herdmania pallida (Heller, 1878)
 * Halocynthia partita (Stimpson, 1852) : synonym of Styela canopus (Savigny, 1816)
 * Halocynthia polycarpa Sluiter, 1904 : synonym of Pyura polycarpa (Sluiter, 1904)
 * Halocynthia pulchella (Verrill, 1871) : synonym of Dendrodoa pulchella (Rathke, 1806)
 * Halocynthia riiseana (Traustedt, 1883) : synonym of Pyura vittata (Stimpson, 1852)
 * Halocynthia ritteri (Oka, 1906) : synonym of Halocynthia igaboja Oka, 1906
 * Halocynthia rustica (Linnaeus, 1767) : synonym of Styela rustica Linnaeus, 1767
 * Halocynthia sanderi (Traustedt & Weltner, 1894) : synonym of Pyura sacciformis (Drasche, 1884)
 * Halocynthia setosa Sluiter, 1905 : synonym of Pyura setosa (Sluiter, 1905)
 * Halocynthia stubenrauchi (Michaelsen, 1900) : synonym of Pyura stubenrauchi (Michaelsen, 1900)
 * Halocynthia superba (Ritter, 1900) : synonym of Halocynthia aurantium (Pallas, 1787)
 * Halocynthia transversaria Sluiter, 1904 : synonym of Boltenia transversaria (Sluiter, 1904)
 * Halocynthia tuberculum Verrill, 1879 : synonym of Styela coriacea (Alder & Hancock, 1848)
 * Halocynthia vanhaffeni Michaelsen, 1904 : synonym of Pyura stolonifera (Heller, 1878)
 * Halocynthia vanhoeffeni Michaelsen, 1904 : synonym of Pyura stolonifera (Heller, 1878)
 * Halocynthia vanhoffeni Michaelsen, 1904 : synonym of Pyura stolonifera (Heller, 1878)
 * Halocynthia villosa (Stimpson, 1864) : synonym of Boltenia villosa (Stimpson, 1864)
 * Halocynthia washingtonia Ritter, 1913 : synonym of Pyura haustor (Stimpson, 1864)