Diphyidae
The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores arranged one behind the other. The front one includes a somatocyst, while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac in each nectophore allows the organism to swim efficiently.
Systematics
The World Register of Marine Species includes the following taxa in the family Diphyidae:- Subfamily Diphyinae Quoy & Gaimard, 1827
- * Genus Chelophyes Totton, 1932
- ** Chelophyes appendiculata
- ** Chelophyes contorta
- * Genus Dimophyes Moser, 1925
- ** Dimophyes arctica
- * Genus Diphyes Cuvier, 1817
- ** Diphyes antarctica Moser, 1925
- ** Diphyes bojani
- ** Diphyes chamissonis Huxley, 1859
- ** Diphyes dispar Chamisso & Eysenhardt, 1821
- * Genus Eudoxoides Huxley, 1859
- ** Eudoxoides mitra
- ** Eudoxoides spiralis
- * Genus Lensia Totton, 1932
- ** Lensia achilles Totton, 1941
- ** Lensia ajax Totton, 1941
- ** Lensia asymmetrica Stepanjants, 1970
- ** Lensia campanella
- ** Lensia challengeri Totton, 1954
- ** Lensia conoidea
- ** Lensia cordata Totton, 1965
- ** Lensia cossack Totton, 1941
- ** Lensia exeter Totton, 1941
- ** Lensia fowleri
- ** Lensia gnanamuthui Daniel & Daniel, 1963
- ** Lensia grimaldii Leloup, 1933
- ** Lensia hardy Totton, 1941
- ** Lensia havock Totton, 1941
- ** Lensia hostile Totton, 1941
- ** Lensia hotspur Totton, 1941
- ** Lensia hunter Totton, 1941
- ** Lensia leloupi Totton, 1954
- ** Lensia lelouveteau Totton, 1941
- ** Lensia meteori
- ** Lensia multicristata
- ** Lensia panikkari Daniel, 1971
- ** Lensia quadriculata Pages, Flood & Youngbluth, 2006
- ** Lensia subtilis
- ** Lensia subtiloides
- ** Lensia zenkevitchi Margulis, 1970
- * Genus Muggiaea Busch, 1851
- ** Muggiaea atlantica Cunningham, 1892
- ** Muggiaea bargmannae Totton, 1954
- ** Muggiaea delsmani Totton, 1954
- ** Muggiaea kochii
- Subfamily Giliinae Pugh & Pages, 1995
- * Genus Gilia Pugh & Pages, 1995
- ** Gilia reticulata
- Subfamily Sulculeolariinae Totton, 1954
- * Genus Sulculeolaria Blainville, 1830
- ** Sulculeolaria biloba
- ** Sulculeolaria chuni
- ** Sulculeolaria monoica
- ** Sulculeolaria quadrivalvis de Blainville, 1830
- ** ''Sulculeolaria turgida''