(Diphasia) (Diphasia) is a biological genus in the family Sertulariidae and order Leptothecatae (Thecate Hydroids).
Diphasia attenuata
Diphasia corniculata
Diphasia delagei
Diphasia digitalis
Diphasia fallax
Diphasia nigra
Diphasia pinaster
Diphasia robusta
Diphasia subcarinata
Diphasia tropica
Diphasia rosacea
Diphasia pinastrum
Abietinaria
Amphisbetia
Crateritheca
Dictyocladium
Diphasia
Dynamena
Fraseroscyphus
Hydrallmania
Idiellana
Parascyphus
Pasya
Pericladium
Salacia
Selaginopsis
Sertularella
Sertularia
Stereotheca
Symplectoscyphus
Tamarisca
Thuiaria
Thyroscyphoides
Tridentata