Diphyidae

The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other. The front one includes a somatocyst (extension of the gastrovascular system), while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac (central cavity with muscular walls) in each nectophore allows the organism to swim efficiently.^[1]

The World Register of Marine Species includes the following taxa in the family Diphyidae:^[2]

• Subfamily DiphyinaeQuoy & Gaimard, 1827
  • Genus ChelophyesTotton, 1932
    • Chelophyes appendiculata(Eschscholtz, 1829)
    • Chelophyes contorta(Lens & van Riemsdijk, 1908)
  • Genus Dimophyes Moser, 1925
    • Dimophyes arctica(Chun, 1897)
  • Genus Diphyes Cuvier, 1817
    • Diphyes antarcticaMoser, 1925
    • Diphyes bojani(Eschscholtz, 1825)
    • Diphyes chamissonisHuxley, 1859
    • Diphyes disparChamisso & Eysenhardt, 1821
  • Genus EudoxoidesHuxley, 1859
    • Eudoxoides mitra(Huxley, 1859)
    • Eudoxoides spiralis(Bigelow, 1911)
  • Genus LensiaTotton, 1932
    • Lensia achillesTotton, 1941
    • Lensia ajaxTotton, 1941
    • Lensia asymmetricaStepanjants, 1970
    • Lensia campanella(Moser, 1917)
    • Lensia challengeriTotton, 1954
    • Lensia conoidea(Keferstein & Ehlers, 1860)
    • Lensia cordataTotton, 1965
    • Lensia cossackTotton, 1941
    • Lensia exeterTotton, 1941
    • Lensia fowleri(Bigelow, 1911)
    • Lensia gnanamuthuiDaniel & Daniel, 1963
    • Lensia grimaldiiLeloup, 1933
    • Lensia hardyTotton, 1941
    • Lensia havockTotton, 1941
    • Lensia hostileTotton, 1941
    • Lensia hotspurTotton, 1941
    • Lensia hunterTotton, 1941
    • Lensia leloupiTotton, 1954
    • Lensia lelouveteauTotton, 1941
    • Lensia meteori(Leloup, 1934)
    • Lensia multicristata(Moser, 1925)
    • Lensia panikkariDaniel, 1971
    • Lensia quadriculataPages, Flood & Youngbluth, 2006
    • Lensia subtilis(Chun, 1886)
    • Lensia subtiloides(Lens & van Riemsdijk, 1908)
    • Lensia zenkevitchiMargulis, 1970
  • Genus MuggiaeaBusch, 1851
    • Muggiaea atlanticaCunningham, 1892
    • Muggiaea bargmannaeTotton, 1954
    • Muggiaea delsmaniTotton, 1954
    • Muggiaea kochii(Will, 1844)
• Subfamily GiliinaePugh & Pages, 1995
  • Genus GiliaPugh & Pages, 1995
    • Gilia reticulata(Totton, 1954)
• Subfamily SulculeolariinaeTotton, 1954
  • Genus SulculeolariaBlainville, 1830
    • Sulculeolaria biloba(Sars, 1846)
    • Sulculeolaria chuni(Lens & van Riemsdijk, 1908)
    • Sulculeolaria monoica(Chun, 1888)
    • Sulculeolaria quadrivalvisde Blainville, 1830
    • Sulculeolaria turgida(Gegenbaur, 1854)