xviii CONTENTS OF THE FIRST VOLUME. 



CHAPTER IV. 



ON ZOOLOGICAL REGIONS. 



Principles upon which Zoological Regions should be formed (p. 53) — Which class 

 of Animals is of most importance in determining Zoological Regions (p. 56) — 

 Various Zoological Regions proposed since 1857 (p. 58) — Discussion of proposed 

 Regions (p. 61) — Reasons for adopting the Six Regions first proposed by Mr. 

 Sclater (p. 63) — Objections to the system of Circumpolar Zones (p. 67) — Does 

 the Arctic Fauna characterise an independent Region (p.68) — Palsearctic Region 

 (p. 71) — Ethiopian Region (p. 73) — Oriental Region (p. 75) — Australian Re- 

 gion (p. 77) — Neotropical Region (p. 78) — Nearctic Region (p. 79) — Observations 

 on the series of Sub-regions (p. 80) 50—82 



CHAPTER V. 



CLASSIFICATION AS AFFECTING THE STUDY OF GEOGRAPHICAL DISTRIBUTION. 



Classification of the Mammalia (p. 85)— Classification of Birds (p. 92) — Classifica- 

 tion of Eeptiles (p. 98)— Classification of Amphibia (p. 100) — Classification of 

 Fishes (p. 101)— Classification of Insects (p. 102) — Classification of Mollusca 

 (P- 104) 83—104 



PART II 



ON THE DISTRIBUTION OF EXTINCT ANIMALS. 

 CHAPTER VI. 



THE EXTINCT MAMMALIA OF THE OLD WORLD. 



Historic and Post-pliocene Period (p. 110) — Pliocene Period (p. 112) — General 

 Conclusions as to the Pliocene and Post-pliocene Faunas of Europe (p. 113)— 

 Miocene Period (p. 114) — Extinct Animals of Greece (p. 115) — Miocene Fauna 

 of Central and Western Europe (p. 117) — Upper Miocene Deposits of India 

 (p. 121) — General Observations on the Miocene Faunas of Europe and Asia 

 (p. 123)— Eocene Period (p. 124) — General Considerations on the Extinct 

 Mammalian Fauna of Europe (p. 126) 107 — 128 



