. The Canadian entomologist. Insects; Entomology. 188 THE CANADIAN ENTOMOLOGIST. tubes, fastening it with one or two of the spring clips; (4) connect the glass tube to the tubing of the double bulb and inflate the larval skin by gently squeezing the outside bulb, at the same time, with the other hand, holding the caterpillar in the oven to dry. When perfectly dry, the larva should be carefully removed from the glass tube and mounted with shellac on fine wire, one end of which should be first wound several times around an insect pin. Naturally, at first, specimens will be spoiled, but with care
. The Canadian entomologist. Insects; Entomology. 188 THE CANADIAN ENTOMOLOGIST. tubes, fastening it with one or two of the spring clips; (4) connect the glass tube to the tubing of the double bulb and inflate the larval skin by gently squeezing the outside bulb, at the same time, with the other hand, holding the caterpillar in the oven to dry. When perfectly dry, the larva should be carefully removed from the glass tube and mounted with shellac on fine wire, one end of which should be first wound several times around an insect pin. Naturally, at first, specimens will be spoiled, but with care good results will soon be obtained. It is best to begin with hairless larv^. After the month of June, many caterpillars which have hatched from eggs laid during spring, can easily be collected by beating them off trees and shrubs of almost all kinds. Specially-made beating-nets may be pur- chased from dealers in entomological supplies, but, for the needs of the beginner, an old umbrella held upside down, does very well. The umbrella should be held beneath part of the plant with one hand, while the larvae are beaten from the foliage into it, by means of a light stick held in the other hand. When hunting caterpillars in May and June, cocoons and pupc^ of a number of different species of moths will be found beneath boards, dry stumps, etc. The cocoons of the two Halisidota Tussock Moths shown here will often be met with. These latter, which are oval brownish cocoons, if saved and brought into the house will soon give the perfect insects. It may be, however, that some will be parasitized, and instead ^^'^^-^^--Haiisidota caiyce. of producing moths, tachina flies some- what like the ordinary house-fly, except in size, or four-winged ichneumon flies will be seen in our breeding cages. Such surprises, however, are not always disappointments, as a knowledge of our parasitic, or beneficial, species is of much value. Were it not for these parasitic forms, our native species of injurious
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