t all calculation. This salutary purpose is effected by the several larve ostracized for its condition, although its disease: is of the syrphus fly, the lace-winged fly, the ladybug and hardly catching, it crawls away to one of the larger a number of very small Hymenopterous parasites. Of leaves,… … tiny fly, emerges and takes wing to work more OF PLANT LICE. mischief among. the rose pests. The illustrations fully elucidate the facts set forth in the text. They present a wonderful insight into a small tragedies between the parasite fly and its victims. natural force, not the less masterful…
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