The large, pyramidal anteriornectophore is the only one developed. The conical somatocyst is situated above the hydroecium, and extends to a greater height than the nectosac. The bract is cuboidal, with slightly concave facets. Swollen somatocyst with 2 lateral and an apical processes.
Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Siphonophorae Order Calycophorae Family Abylidae Subfamily Abylopsinae Genus Enneagonum Species Enneagonum hyalinum