Fraser, C. McLean, 1912. Some hydroids of Beaufort, North Carolina. Bull. Bur. Fish. U.S. 30 : 337-387.
page(s): 370 [details]
context source (Bermuda)
Morris, B. F.; Mogelberg, D. D. (1973). Identification manual to the pelagic Sargassum fauna. BBSR Special Publication # 11
, 1-63 [details]
From editor or global species database
Diagnosis Hydroid colony stolonal or erect branched, hydrotheca campanulate with smooth margin, pedicel present; hydrothecal base with annular perisarcal thickening and membranous diaphragm or thick diaphragm and no annular thickening; gonotheca solitary, with or without operculum, arising from hydrorhiza; exceptionally with nematothecae; gonophores as fixed sporosacs, liberated medusoids, eumedusoids, or free medusae.
Medusa with flat umbrella; manubrium short and flat, mouth with irregular lips; with four or more branched radial canals; marginal tentacles hollow; gonads linear to sinuous on radial canals; with marginal cordyli; with or without marginal cirri; with or without adaxial ocelli; without statocysts. [details]