. Catalogue of the described Diptera of North America. Diptera -- North America. SMITHSONIAN MISCELLANEOUS COLLECTIONS. CATALOGUE OF THE D I P T E R A OF NORTH AMERICA. PREPARED FOR THE SMITHSONIAN INSTITUTION BY R. OSTEN WASHINGTON: SMITHSONIAN INSTITUTION. JANUARY, 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 Osten-Sacken, C. R. (Carl Robert), 1828-1906. Washington, Smithsonian institution

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Keywords: ., bookauthorostensac, bookcentury1800, bookdecade1850, bookyear1858