. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . Our common bumble-bees.—a, Xylocopa virginica : b, Bombtis fervidus : c. B. cotisimilis; d, B. virginicus ; e, B. americanorum (queen) \ f, B. fcrvidiis: g, B. americanorum (worker), to show pollen mass on hind tibia; h, B. vagans; i, Apathus elatus. All somewhat more than natural size.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1896