CONTENTS. 



PART I. 



geoqrapsicaij distribution. 

 I. 



PAGE 



General prineiples of zoogeography. — Faunal variation. — Faunas of isola- 

 tion. — Belation» of past and present faunas. — Origination of faunas . 1 



II. 



Areas of spoeifie distribution. — Generic distribution. — Distribution of fam- 

 ilies and orders. — Conterminous and diseoutinuous areas of distribu- v' 

 tion IT 



III. 



Conditions affecting distribtition. — Climate.— Food-supply. — Barriers to 

 migration. — Migrations of mammals and birds. — Dispersal of amphib- 

 ians and reptiles, — Dispersal of insects and moUusks . . . .35 



IV. 



Zoological regions. — Holarctic realm. — Neotropical. — Ethiopian.— Orien- 

 tal. — Australian.— Polynesian. — Tyrrhenian, Sonoran, and Austro- 

 Malaysian transition regions 55 



Distribution of marine life. — Nature of the deep-sea fauna.— Oceanic 

 pelagic fauna. — Littoral fauna. — Pela^'ic faunas of lakes. — Deep-lake 

 faunas ............. 109 



