. Comparative zoology, structural and systematic. For use in schools and colleges. Zoology. 290 COMPARATIVE ZOOLOGY. lancets; the thorax is globular; and the legs slender. Tlie larvaB are footless grubs. The Dipters number about 24,000. Among them are the Mosquitoes (Culex); Hes-. 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 Orton, James, 1830-1877. New York, Harper and brothers

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