In the common seal have also been found ligula crispa, Schistocephalus dimorphus, and Echinorhynchus strumosus.
In this case, only the actual tongue (or ligula) and its paragloss are figured.
Tubus: a term used to designate the corneous base of a ligula: the sheath of the tongue.
Paraglossa, par-a-glos′a, n. one of the two appendages of the ligula in insects.
This I shall not deny; but the ligula certainly had more resemblance to a small spatula, or tea-spoon, than to our forks.
According to circumstances it might perhaps be denominated Lingua or ligula.
And lastly, in the midst of all is a slender setiform organ (ligula), which is the counterpart of the tongue.
The long sucking “tongue” of bees is probably a modification of the ligula.
This is produced by ligula simplicissima, which escapes by an aperture formed near the vent of the infested fish.