Hebella Allman, 1888

Colony stolonal, hydrotheca on a short pedicel, campanulate to cylindrical, usually with annular thickening and membranous diaphragm; gonotheca solitary with or without operculum, arising from hydrorhiza; gonophores either liberable eumedusoids or immature swimming medusa with two to four marginal tentacles with or without ocelli with short manubrium with or without lips with four or more radial canals.