"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;…