A common Ant has two Eyes which are placed on each Side of its Head; they are convex, immoveable, and of a black Colour; they lie ſo far on either Side that they cannot take in Objects directly before or above them. This Diſadvantage is obviated by the Feelers which give them Notice of an Impediment in the way. The external Part of the Cornea, which, like the Eyes of other Insects is a Piece of Lattice Work conſiſting of a Number of Lenſes that repreſent Objects to them on all Sides, and ſo anſwer the End of a moveable Eye.
The Head is connected with the Breaſt by a Ligament which they can dilate or contract at Pleaſure. It contains part of the Hollow Tube which communicates with the mouth, and continues through the Breaſt and other Ligament that unites the Body and Breaſt, and ſo conveys the Juices or Food to the Inteſtines.
Antennæ. As may be obſerved in Variety of Scarabs or Beetles, in the Hawk-Graſhopper, Gryllotalpa, Houſe-Crickets and ſeveral Flies. The Feelers of many Inſects ſeem to lengthen or ſhorten in a kind of Proportion to the Largeneſs and Diſtance of their Eyes. Probably therefore the Feelers rather ſupply the Want of large Eyes than the Immobility of them.
