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ENTOMOLOGY

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CHAPTER XVIBiology and Habits of Horse Flies 1J. L. TVebbIn various parts of the United States and in many foreign countrieshorses, cattle, and similar animals sufrer severely from the bloodsucking}labit of the so-called horse flies of the genus Tabanus (plate XIX).PLATE XIX.-Tabanidae attacking cattle: Tabanus phaenops on cow's jaw, and T.punctifcr on top of shoulder. (Bishopp.)The life history and habits of different species may vary greatly. Yetthere are certain conditions common to all species. In general, theflies of this genus arc to be found in or near swampy areas of the country.~ This lecture was read October 7, 1918.236

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