xx LIST OF ILLUSTRATIONS 



PAGE 



1167. Tillotherium fodiens, skull 574 



1168. Diagram illustrating the mutual relationship of the Chordata . 580 

 11(il) - ,, Phyla of 



animals . 582 



1170. Map showing depths of sea between the British Isles and the 



< 'ontinenb 587 



1171. -Maj. showing depths of sea between New Zealand and Australia . 588 



1172. Map of tin- \V<> rid showing Zoo-geographical Regions . 592 



1173. Diagram illustrating the relations of the Zoo-geographical Regions 598 



