The Dobson is one of the most curious insects in this order. It is generally known as the hellgrammite, although it has probably more popular names than any other insect and some are very peculiar, for instance, Conniption-bugs, Goggle-goy, Flip-flaps, Ho Jacks, Snake-doctor. It is a large insect with strong-biting mouth, living in its larval form in water. THE SNAKE FLIES. These are found in the Western States and prey vigorously upon other insects and render themselves especially important to the farmer of the far West because of their ravages upon the Coddling Moth, which is the special enemy of apple trees. [Illustration: WALKING-STICKS.] THE ANT LION. The Ant Lion digs a little pit in loose sand and buries itself therein with the exception of its head. Into this trap fall small insects on which it feeds. After the victim is sucked dry the remains are thrown out of the pit. THE DRAGONFLIES. These insects are also known as "Horse-stingers" and "Devil's Darning-needles," and many superstitious beliefs are held in regard to them, although they are perfectly harmless. Many ignorant people still hold them capable of sewing up bad boys' ears. The early part of their existence is spent in the water. They prey upon flies, mosquitoes and small insects. In the wings of these flies are often beautiful colors. They frequent stagnant water. The Kingbird favors them as a diet. THE MAYFLIES. The Mayflies or Shadflies, like the Dragonflies, spend their infancy under water feeding upon vegetables and primitive forms of animal life. Their scientific name is Ephemerida, coined from the Greek word meaning a day. They were given this name because of their short life. Great quantities of the larvæ are eaten by fish. CADDIS FLIES. What observing country boy has not seen the queer-looking Caddis worms in the brooks and their curious larva cases. Put them in your aquarium, for they are interesting to watch and study. Their wings are more or less covered with hair and this gives them a moth-like appearance. They frequent the shady margins of streams. The larvæ cases are made of leaves, bits of sticks, sand, shells, etc., fastened by silk which the caddis worm spins. These cases protect them from fishes and preying insects. [Illustration: DRAGON FLIES.] THE HYMENOPTERA.