Page:A History of Land Mammals in the Western Hemisphere.djvu/183

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THE GEOGRAPHICAL DISTRIBUTION OF MAMMALS
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Fig. 70.—Ermine (Mustela erminea).—By permission of the N.Y. Zoölog. Soc.


Fig. 71.—Timber or Grey Wolf (Canis nubilis).—By permission of the N.Y. Zoölog. Soc.