Published online by Cambridge University Press: 31 May 2012
The fact that the swallowing muscles have not yet been described for any member of the order Odonata was first brought to the writer's attention in the course of studies on the mechanism of moulting and hatching of I. verticalis. A previous writer on that subject had described an Odonate nymph as swallowing water without the use of any stomodeal dilator muscles, which he had assumed were absent.