"Vertical section of Aurelia. m., Mouth; st., stomach; r.c., radial canal; R., reproductive organs; g.f., gastric filaments; g.p., sub-genital cavity; l., marginal tentacle; s., sense organ; the shaded part is mesogloea." -Thomson, 1916

Aurelia

"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; C., ciliated combs; F., funnel or central canal; SV., paragastric canal running parallel with stomodaeum; G., other canals of the gut; V., one of the meridional canals, bearing gonads, running under the bands of ciliated combs." -Thomson, 1916

Ctenophore

"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 plates; t and b, tentacles." -Parker, 1900

Hormiphora Plumosa

"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. 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.…

"Diagram of Lucernaria. C., Cavity of gut (colenteron); F., gastric filaments; H. hypostome; G., gonad; T. tentacle; cc., circumference canal." -Thomson, 1916

Lucernaria

"Diagram of Lucernaria. C., Cavity of gut (colenteron); F., gastric filaments; H. hypostome; G., gonad;…

"A medusoid; ma., manubrium; r.c., radial canal; s., sense-organ." -Thomson, 1916

Medusoid

"A medusoid; ma., manubrium; r.c., radial canal; s., sense-organ." -Thomson, 1916

"Structure of a Medusoid. ST., Stomach; M., manubrium; V., velum; T., tentacle; C.C., circumference canal; G., gonad; R.C., radial canal; EN., endoderm; EC., ectoderm; MG, mesogloea." -Thomson, 1916

Medusoid Structure

"Structure of a Medusoid. ST., Stomach; M., manubrium; V., velum; T., tentacle; C.C., circumference…