Apico-lateral ridges on nectophores without distinct notch. One (young nectophores) or 2 (adult) vertical lateral ridges. Lateral ridges absent. Nectosac becoming Y-shaped in larger nectophores. Lateralradial canals distinctly looped. Bract with 4 (only 2 in youngest) very characteristic distal facets. Bracteal canal usually ends before reaching the distal extremity, but a vestigial canal may extend towards it.
Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Siphonophorae Order Physonectae Family Agalmatidae Genus Agalma Species Agalma okeni