. Bulletin. Geography. 272. 273 Fig. 272.—A leptid fly {Coenomyia ferruginea); enlarged (after Williston). Fig. 273.—A large syrphus fly {Milesia virgiiiiciisis); enlarged (after Williston).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geographic Society of Chicago. Chicago, Ill. : Published for the Society by the University of Chicago Press

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeography, bookyear19