. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Cephus pys;m(sns, wheat-stem saw-fly. —a, outline of larva, natural size ; b, larva enlarged ; c, larva in wheat stalk, natural size ; e, adult female ; f, female parasite, enlarged.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906