. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Fig. 113.—Venation of a geometrid (Dyspteris). (After Comstock.) Fig. 114.—Venation of an arctiid (Halisidota). (After Com- stock.). 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 Lochhead, William, 1864- [from old catalog]. Philadelphia, P. Blakiston's son & co

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919