TABLES OF DISTRIBUTION.

In drawing up these tables, showing the distribution of various classes of animals in the Nearctic region, the following sources of information have been chiefly relied on, in addition to the general treatises, monographs, and catalogues used in the compilation of the 4th Part of this work.

Mammalia.-Professor Baird's Catalogue; Allen's List of the Bats; Mr. Lord's List for British Columbia; Brown, for Greenland; Packard for Labrador.

Birds.-Baird, Cassin, and Allen's Lists for United States; Richardson's Fauna Boreali Americana; Jones, for Bermudas; and papers by Brown, Coues, Lord, Packard, Dall, and Professor Newton.

TABLE I.

FAMILIES OF ANIMALS INHABITING THE NEARCTIC REGION.

EXPLANATION.

Names in italics show the families which are peculiar to the region.

Names inclosed thus (......) show families which barely enter the region, and are not considered properly to belong to it.

Numbers correspond to the series of numbers to the families in Part IV.