With 64 tentacles. Umbrella about 12 mm wide and high, with very strong and conspicuous musculature; gonads along greater part of 8 radial canals; 64 tentacles; 64 free statocysts.
Kingdom Animalia Phylum Cnidaria Subphylum Medusozoa Superclass Hydrozoa Class Hydroidomedusae Subclass Trachymedusae Family Rhopalonematidae Genus Pantachogon Species Pantachogon haeckeli
