. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. ';:^fv .^^Hnn BHn nn 'â â¢'':'.â . ^^p§ ^|m in â¢â â 3 / â r ,) X \ I. â I ( ' J[ ' ' \S I :(X ;. 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 : The Institution

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Keywords: ., bookcentury1800, bookdecade1860, booksubjectd, booksubjectinsects