. Elements of comparative zoology. Zoology. INSECTS. 249. Fig. 72.—Adult male hellgrammite (Corydalis comutus). From Riley. 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 Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904