. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. A much smaller but very peculiar genus of beetles, is called the Bombardier (Brachinvs,) from its extraordinary power of discharging from its tail end a very pun- gent fluid, accompanied by a report (re- sembling the sound pJnit) and some smoke- like vapour; this fluid, which resembles nitric acid in its efiects, and makes a stain on the fingers that will last for several Fig. 75. for its defence against more powerful. days, is beetles. no Fig doubt intended 75 represents one of these beetles (B ft
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. A much smaller but very peculiar genus of beetles, is called the Bombardier (Brachinvs,) from its extraordinary power of discharging from its tail end a very pun- gent fluid, accompanied by a report (re- sembling the sound pJnit) and some smoke- like vapour; this fluid, which resembles nitric acid in its efiects, and makes a stain on the fingers that will last for several Fig. 75. for its defence against more powerful. days, is beetles. no Fig doubt intended 75 represents one of these beetles (B ftnnavs ; its head, thorax, and legs are yellowish- red, and its wing-covers dark blue. Like other ground beetles, it may be found under sticks and stones in the spring, and in similar hiding-places on the damp margin of rivers during the hot summer months. There are quite a number of different species of this genus in Canada, but all are very much alike. It would be almost an endless task to go through the list of species of this family, but we trust that the examples now given will be sufficient to enable our readers to recognize these friendly beetles, and save them from being doomed to a pitiless destruction, that knows no diiference between friend and foe. 3. Water Beetles {Dytiscidm, Gyrinidm the.) After the carnivorous Ground Beetles, we come, in the ordinary classification of insects to a large group that live almost entirely in or upon the water. Some of them live on the surf loe of lakes, ponds and pools ; others prefer clear running streams ; others, again, the muddy bottoms of half stagnant pools. This group is divided into two principal families, the "diving-beetles" (DyUscidce). and the "whirligigs" {Gijrinida'). They are all more or less insectivorous, both in their larval and perfect state, and hence beneficial. As their food, however, consists mainly of insects that inhabit the water, and which are either similar in their food and habit
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