Halecium

Halecium is a genus of hydrozoans in the family Haleciidae. These marine invertebrates are found in all oceans, where they often form large colonies.

Species
Halecium currently contains 135 confirmed species. • Halecium amphibolum Watson, 1993

• Halecium annulatum Torrey, 1902

• Halecium annuliforme Galea & Schories, 2012

• Halecium antarcticum Vanhöffen, 1910

• Halecium arcticum Ronowicz & Schuchert, 2007

• Halecium argentum Clarke, 1894

• Halecium articulosum Clark, 1875

• Halecium banyulense Motz-Kossowska, 1912

• Halecium banzare Watson, 2008

• Halecium beanii (Johnston, 1838)

• Halecium bermudense Congdon, 1907

• Halecium birulai Spassky, 1929

• Halecium bithecum Watson, 2005

• Halecium brashnikowi Linko, 1911

• Halecium brevithecum Watson, 2008

• Halecium bruniensis Watson, 1975

• Halecium calderi Galea, 2010

• Halecium conicum Stechow, 1919

• Halecium corrugatissimum Trebilcock, 1928

• Halecium corrugatum Nutting, 1899

• Halecium crinis Stechow, 1913

• Halecium curvicaule Lorenz, 1886

• Halecium cymiforme Allman, 1888

• Halecium cymosum Fraser, 1935

• Halecium delicatulum Coughtrey, 1876

• Halecium densum Calkins, 1899

• Halecium dichotomum Allman, 1888

• Halecium diminutivum Fraser, 1942

• Halecium discoidum Galea, 2013

• Halecium dubium Fraser, 1941

• Halecium dufresnae Millard, 1977

• Halecium dyssymetrum Billard, 1929

• Halecium edwardsianum (d'Orbigny, 1842)

• Halecium elegantulum Watson, 2008

• Halecium erratum Galea, Försterra, Häussermann & Schories, 2014

• Halecium exaggeratum Peña Cantero, Boero & Piraino, 2013

• Halecium exiguum Fraser, 1948

• Halecium expansum Trebilcock, 1928

• Halecium fasciculatum Fraser, 1938

• Halecium fijiensis Watson, 2015

• Halecium filicula Allman, 1877

• Halecium fjordlandicum Galea, 2007

• Halecium flabellatum Fraser, 1935

• Halecium flexum Fraser, 1948

• Halecium fragile Hodgson, 1950

• Halecium fraseri Ralph, 1958

• Halecium frigidum Peña Cantero, 2010

• Halecium galeatum Billard, 1937

• Halecium groenlandicum Kramp, 1911

• Halecium halecinum (Linnaeus, 1758)

• Halecium harrimani Nutting, 1901

• Halecium humeriformis Galea & Schories, 2014

• Halecium humile Pictet, 1893

• Halecium incertus Naumov & Stepanjants, 1962

• Halecium inhacae Millard, 1958

• Halecium insolens Fraser, 1938

• Halecium interpolatum Ritchie, 1907

• Halecium irregulare Bonnevie, 1899

• Halecium jaederholmi Vervoort, 1972

• Halecium kofoidi Torrey, 1902

• Halecium labiatum Billard, 1933

• Halecium labrosum Alder, 1859

• Halecium laeve Kramp, 1932

• Halecium lamourouxianum (d'Orbigny, 1842)

• Halecium lankesterii (Bourne, 1890)

• Halecium lenticulare Trebilcock, 1928

• Halecium lightbourni Calder, 1991

• Halecium linkoi Antsulevich, 1980

• Halecium liouvillei Billard, 1934

• Halecium lucium Antsulevich, 1979

• Halecium luteum Watson, 1975

• Halecium macrocaulus Watson, 2008

• Halecium macrocephalum Allman, 1877

• Halecium marsupiale Bergh, 1887

• Halecium maximum Galea & Schories, 2014

• Halecium mediterraneum Weismann, 1883

• Halecium minutum Broch, 1903

• Halecium mirabile Schydlowsky, 1902

• Halecium mirandus Antsulevich & Regel, 1986

• Halecium modestum Galea & Schories, 2014

• Halecium muricatum (Ellis & Solander, 1786)

• Halecium mutilum Allman, 1876

• Halecium nanum Alder, 1859

• Halecium nullinodum Fraser, 1935

• Halecium obovatum Watson, 2018

• Halecium ochotense Linko, 1911

• Halecium ornatum Nutting, 1901

• Halecium ovatum Totton, 1930

• Halecium pallens Jäderholm, 1904

• Halecium paucinodum (Fraser, 1947)

• Halecium pearsonenese Watson, 1997

• Halecium perexiguum Hirohito, 1995

• Halecium permodicum Calder, 2017

• Halecium petrosum Stechow, 1919

• Halecium planum Bonnevie, 1901

• Halecium platythecum Galea, Försterra & Häussermann, 2014

• Halecium plicatocarpum Vervoort & Watson, 2003

• Halecium plicatum Galea, 2015

• Halecium plumosum Hincks, 1868

• Halecium praeparvum Calder, 2017

• Halecium profundum Calder & Vervoort, 1998

• Halecium pseudodelicatulum Peña Cantero, 2014

• Halecium pseudoincertus Peña Cantero, 2014

• Halecium pusillum (Sars, 1857)

• Halecium pyriform Hirohito, 1995

• Halecium ralpha Watson & Vervoort, 2001

• Halecium reduplicatum (Fraser, 1935)

• Halecium regulare Fraser, 1938

• Halecium reversum Nutting, 1901

• Halecium scalariformis Billard, 1929

• Halecium scandens Nutting, 1906

• Halecium scutum Clark, 1977

• Halecium secundum Jäderholm, 1904

• Halecium sessile Norman, 1867

• Halecium sibogae Billard, 1929

• Halecium singulare (Billard, 1929)

• Halecium spatulum Watson, 2000

• Halecium speciosum Nutting, 1901

• Halecium stoloniferum Soto Angel & Peña Cantero, 2015

• Halecium tabulatum Watson, 2005

• Halecium tangaroa Peña Cantero, 2017

• Halecium telescopicum Allman, 1888

• Halecium tenellum Hincks, 1861

• Halecium tensum Fraser, 1941

• Halecium tenue Fraser, 1938

• Halecium textum Kramp, 1911

• Halecium tortile Bonnevie, 1898

• Halecium tortum Fraser, 1938

• Halecium tristaniensis Galea, 2014

• Halecium tubatum Watson, 2008

• Halecium undulatum Billard, 1921

• Halecium vagans Fraser, 1938

• Halecium vasiforme Fraser, 1935

• Halecium wilsoni Calkins, 1899

• Halecium xanthellatum Galea, 2013