. Bulletin - New York State Museum. Science. ^^^v Fig. 8 Group recognition characters for dragon fly nymphs. B and D, labium and end of abdo- men of Anax Junius Dru. (Aeschninae) A and C, labium and end of abdomen of Perithemis 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; New York State Museum. Albany : New York State Education Dept

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887