Umbrella 2 mm wide, 3 mm high; manubrium tubular, elongate, mouth with four small, broadly rounded lips; up to 48 tentacles; 8 statocysts.
Kingdom Animalia Phylum Cnidaria Subphylum Medusozoa Superclass Hydrozoa Class Hydroidomedusae Subclass Trachymedusae Family Rhopalonematidae Genus Persa Species Persa incolorata
