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The spinose ear tick, Ornithodoros megnini: Distribution 63 3. The black-legged tick, Ixodes scapularis: Distribution in the United States 78 4. The rotund tick, Ixodes Jcingi: Distribution in the United States .... 84 5. The rabbit tick, Hsemaphysails leporis-palustris: Distribution in the United States 91 (i. The brown dog tick, Rhipicephalus sanguineus: Distribution in the United States 104 7. The North American cattle tick, Margaropus annulatus: Distribution in the United States 8. The gopher-tortoise tick, Amblyomma tuberculatum: Distribution 125 9. The gopher-tortoise tick: Vesica biloba 10. The Gulf Coast tick, Amblyomma maculatum: Distribution in the United States 11. The lone star tick, Amblyomma americanum: Distribution in the United States 12. The Cayenne tick, Amblyomma cajennense: Distribution in North and Central America L53 13. The rabbit Dermacentor, Dermacentor parumapertus marginatus: Distribution L60 14. The Rocky Mountain spotted-fever tick, Dermacentor venustus: Distribution in the United States 15. The Pacific Coast tick, Dermacentor occidentalis: Distribution in the United States 16. The American dog tick, Dermacentor variabilis: Distribution in the United States 17. The tropical horse tick, Dermacentor nitens: Distribution in North America and West Indies * For the classification of the ticks the worker is referred to Mr. Banks's Revision of the Ixodoidea (1908). Descriptions of adults, aside from their size and coloration, have been omitted in the present work, as they will be found in Mr. Banks's Revision. * In determining the number of eggs deposited by a species only females that have been permitted to drop should be used.

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