Ontario Sessional Papers, 1908, . frequents flower-heads, and was abundant at Quebec two years ago. A fly of strange habits is Sarcophaga sarracenicc, Riley, Fig. 46, belong-ing to the fainily Sarcophagidae. In the pitchers of the plant, Sarraceniapurpurea, will be found a decaying mass of insects, which had been attractedby, and drowned in, the liquid that the pitchers contain. Into this corruptingmass the fly, S. sarracenicc drops her eggs. The maggots from these thrivein pollution and, after attaining their growth, bite a way through the sideof the pitcher and fall into the


Ontario Sessional Papers, 1908, . frequents flower-heads, and was abundant at Quebec two years ago. A fly of strange habits is Sarcophaga sarracenicc, Riley, Fig. 46, belong-ing to the fainily Sarcophagidae. In the pitchers of the plant, Sarraceniapurpurea, will be found a decaying mass of insects, which had been attractedby, and drowned in, the liquid that the pitchers contain. Into this corruptingmass the fly, S. sarracenicc drops her eggs. The maggots from these thrivein pollution and, after attaining their growth, bite a way through the sideof the pitcher and fall into the surrounding herbage, in which they undergothe pupal change. The Muscidae form another large family. Fig. 47. In it we find Mu&cadomestica, Linn., Lucilia Ccesar, Linn., Sarcophaga carnaria, Linn., house-hold pests too well known. In the Anthomyidae comes the troublesome Anihomyia raphani, Harris,which spoils our radishes. The ochre-colored Dung-fly, Scatophaga stercoraria, Linn., is is a representative of the Ffg. 46.—Sarcophaga earracenise.


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