by William Swainson

“ Labouring under similar disadvantages to those which impeded the researches of so profound an observer, we feel some hesitation in expressing a different sentiment on the subject, particularly in reference to his own disposition of affinities.
It is evident that these typical groups, whatever may be their nature, must present some very strong points of analogy to those in the circle of Vertebrata: and that such analogies should extend to the corresponding groups of the Annulosa. ”

“ Quadrupeds and mandibulate insects are provided with jaws for tearing and masticating their prey, while in birds and suctorial insects, the mouth is lengthened into a proboscis, by which nourishment is imbibed by suction. ”