Eumedusa n. g. Bigelow, 1920: 7; Kramp, 1961: 122; Bouillon et al., 2006: 180. Type species: Eumedusa birulai (Linko, 1913).
Diagnosis. Medusa with 4 unbranched radial canals and 4 or more centripetal canals arising from circular canal; gonads folded; tentacles of two kinds, large hollow ones with terminal knob, small ones without terminal knob; no ocelli.