Elongate, bow-shaped definitive nectophore with a pointed apex and truncated base. Seven longitudinal ridges arranged characteristically. Simple somatocyst without branches. Larval nectophore with functional nectosac and 4 radial canals arising separately from the simple somatocyst. Bow-shaped eudoxidbract with 5 longitudinal ridges. Distinctive lateral branch to dorsal canal.
Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Siphonophorae Order Calycophorae Family Prayidae Subfamily Nectopyramidinae Genus Nectopyramis Species Nectopyramis natans