. Bulletin of the Illinois State Laboratory of Natural History. Natural history -- Illinois. XXXV. .3. gi ^^"^«i â ^Z'; :^ *- Xy J^.^//^ ilPi~ jep. ⢠Z. l^/A % vi'-^^-^'. t/.l////. 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 Illinois State Laboratory of Natural History. Bloomington, Ill. : The Laboratory

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