. L'insecte [microforme] : livre un compte rendu populaire de l'abeilles, guêpes, fourmis, sauterelles, mouches et autres insectes de l'Amérique du Nord à l'exclusion des papillons diurnes et nocturnes et les coléoptères, avec les histoires de vie complet, de tables et de bibliographies. Insectes ; les insectes. Les vraies mouches Voir le parmi les punaises Heteroptera, le vrai poux (Axioplura) et l'oiseau des poux (Maliophaga). Avec les espèces qui pondent des oeufs le développement larvaire est généralement rapide, et avec quelques torms, particulièrement ceux qui sont de véritables charognards et les nourrisseurs sur la charogne ou sur les excréments, il devient très rapide. La pos- possibilités d'enormou

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. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. The True Flies See the bedbug among the Heteroptera, the true lice (Axioplura) and the bird lice (Maliophaga). With those species which lay eggs the larval development is usually rapid; and with some torms, particularly those which are true scavengers and feeders upon carrion or upon excrement, it becomes very rapid. The possi- bilities for enormous multiplication are apparently greater in this order than in any other group of insects. It is estimated that the progeny of a single house-tly, if undisturbed, would in the course of a single summer reach high into the billions in numbers, while an almost equally rapid multiplication takes place with some of the mosquitoes. There is great variation in habits in the group. Most flies prefer the sunshine and are most numerous in the middle of sunny days. A few, however, such as the mosquitoes, fly at night. These, however, are the great exception. Very many flies frequent flowers, and thus exercise a beneficial function in the cross-fertilization of plants. Many speciesâcomprising, in fact, whole familiesâare aquatic or sub-aquatic in their early stages, and some possess the faculty of living under what appear to be most disadvantageous conditions. Some of the llies of the peculiar family Ephydridx, for example, live in the strongly alkaline lakes of the far West where almost nothing else can live. It is surprising how little of an intimate and exact nature is known concerning the life history of most flies, it is true that maggots are not attractive creatures, but the mode of life is so variable in the different groups of flies and the transformations are so remarkable that a very great interest attaches to many of these ife histories. Unfortunately, however, very few observ

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• bookcentury1900
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• booksubjectinsects
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