"Hydroctena. A medusoid with suggestion of Ctenophore structure, but a true medusoid nonetheless. ab.o. Aboral sensory organ; T., retractile tentacle; v., velum; M., mouth; ST., stomach" -Thomson, 1916

Hydroctena

"Hydroctena. A medusoid with suggestion of Ctenophore structure, but a true medusoid nonetheless. ab.o.…