Umbrella up to 45 mm; manubrial pouches with slight secondary division; 3-5 secondary marginal tentacles in each octant, 1 or 2 statocysts between each secondary tentacle. Colour of manubrium deep chocolate to purplish black.
Kingdom Animalia Phylum Cnidaria Subphylum Medusozoa Superclass Hydrozoa Class Hydroidomedusae Subclass Narcomedusae Family Aeginidae Genus Aeginura Species Aeginura grimaldii
