Identifier: geographicaldis01wall (find matches)
Title: Geographical distribution of animals : with a study of the relations of living and extinct faunas as elucidating the past changes of the earth's surface
Year: 1876 (1870s)
Authors: Wallace, Alfred Russel, 1823-1913
Subjects: Zoology
Publisher: London, Macmillan
Contributing Library: Robarts - University of Toronto
Digitizing Sponsor: University of Toronto

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!!tanfor<£s Gfographieal Ustabf London. L Jacoullan ^: C? (MiAP. X.J TIli: PAL.llAIICTIC Hi:<iI()X. IPI tions of convenience, dependent on custom and on the more orless perfect knowledge we possess of some of the interveningcountries. Zooloyical CJiaracteristics of the Palaiardic Bcgion.—The Pal^e-arctic region has representatives of thirty-five families ofmammalia, fifty-five of birds, twenty-five of reptiles, nine ofamphibia, and thirteen of freshwater fishes. Comparing it withthe oidy other \vholly temperate region, the Isearctic, we find amuch greater variety of types of mammalia and birds. Tliismay be due in part to its greater area, but more, 2:)robably,to its southern boundary being conterminous for an enormousdistance with two tropical regions, the Ethiopean and Oriental ;^vhereas the Nearctic has a comparatively short southern bound-ary conterminous with the Xeotropical region only. This is sovery important a difference, that it is rather a matter of surprisethat the

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