. Annual report of the Regents. New York State Museum; Science. Fig. 8 Group recognition characters for dragon fly nymphs. B and D, labium and end of abdo- men of Anax Junius Dru. (Aeschninae) Aand C, labium and end of abdomen of Peri themls domitia Dru. (Libellulinae). 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 New York State Museum; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Pri

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. Annual report of the Regents. New York State Museum; Science. Fig. 8 Group recognition characters for dragon fly nymphs. B and D, labium and end of abdo- men of Anax Junius Dru. (Aeschninae) Aand C, labium and end of abdomen of Peri themls domitia Dru. (Libellulinae). 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 New York State Museum; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer

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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience