"Vertical section of Aurelia. m., Mouth; st., stomach; r.c., radial canal; R., reproductive organs;…
"Diagram of a Ctenophore. M., Mouth; S., sensory organ; T., tentacle cut short; SH., pouch of tentacle;…
"Hormiphora (Cydippe) plumosa. A, from the side; B, from the aboral pole. mth, mouth; s. pl, swimming…
"Hydroctena. A medusoid with suggestion of Ctenophore structure, but a true medusoid nonetheless. ab.o.…
"Diagram of Lucernaria. C., Cavity of gut (colenteron); F., gastric filaments; H. hypostome; G., gonad;…
"Structure of a Medusoid. ST., Stomach; M., manubrium; V., velum; T., tentacle; C.C., circumference…