In concluding his task, the author ventures to suggest, that naturalists who are disposed to turn aside from the beaten track of research, may find in the line of study here suggested a new and interesting pursuit, not inferior in attractions to the lofty heights of transcendental anatomy, or the bewildering mazes of modern classification. And it is a study which will surely lead them to an increased appreciation of the beauty and the harmony of nature, and to a fuller comprehension of the complex relations and mutual interdependence, which link together every animal and vegetable form, with the ever-changing earth which supports them, into one grand organic whole.

GENERAL INDEX.

All names in Italics refer, either to the genera and other groups of Extinct Animals in Part II. of the First Volume;—or to the genera whose distribution is given under Geographical Zoology (Part IV.) in the Second Volume; the Families and higher groups being in small capitals. All other references are in ordinary type.

The various matters discussed under Zoological Geography (Part III.), are indexed as much as possible by subjects and localities. None of the genera mentioned in this Part are indexed, as this would have more than doubled the extent of the Index, and would have served no useful purpose, because the general distribution of each genus is given in Part IV., and the separate details can always be found by referring to the region, sub-region, and class.

Aard-vark of East Africa, figure of, i. 261

Aard-vark, ii. [246]

Aard-wolf, ii. [196]

Abacetus, ii. [491]

Abax, ii. [489]