Chondrophore
The chondrophores or porpitids are a small group of hydrozoans in the family Porpitidae. Though it derives from an outdated name for this lineage, some find the term chondrophore still useful as a synonym for members of the family Porpitidae – porpitids – when discussing the two genera contained in Porpita and Velella, to avoid confusion with the near-identical name of the former.