X CONTENTS 



OHAPTEE IV 



THE FAUNA OF ALASKA 



PAQB 



On the general features of Alaska, its glaciers, volcanoes and flora- 

 Conditions of Alaska during the G-lacial Epoch— On the evidences 

 derived from the fossil mammals as to the former climate of 

 the country — Evidences of an Asiatic invasion of animals into 

 Alaska— The faunistic affinities of Alaska— On the former 

 presence of the mammoth in Alaska— The fresh- water fishes of 

 Alaska— The distribution and origin of the butterflies belonging 

 to the genus Parnassius — On the mammals peculiar to Alaska — ■ 

 On the relationship of the marine mollusks of the northern 

 Pacific in recent and past times — Evidences of a former land 

 bridge near Bering Strait 74-100 



OHAPTEE V 



THE ROCKY MOUNTAINS AND THEIR INHABITANTS 



The region of the Great Salt Lake — Distribution and origin of the 

 mountain sheep and Eocky Mountain goat — On the geological 

 history of the American deer tribe — the prong-horn antelope 

 and its origin — On the Eocky Mountain flora — ^Accidental 

 distribution as applied to butterflies — Description of the 

 American game preserves — The great Tertiary deposits and 

 their contents 101-122 



OHAPTEE VI 



THE ANIMALS OF THE EASTERN STATES 



On the poverty of lizards in this region — The snakes of the eastern 

 states and their affinities — The origin and distribution of the 

 garter snakes — Eattlesnakes and their range — On American 

 tortoises and turtles — The giant salamanders of America and 

 Asia — On newts and their allies — ^The relationship of the 

 Eastern plants— The pine-barren flora — The range of the 

 star-nosed mole 123-143 



OHAPTEE Vn 



THE FAUNA OF THE CONTINENTAL BASIN 



Description of the prairie region and its inhabitants — On the extinc- 

 tion of the horse in America and the geological history of the 

 horse tribe — Prairie dogs and their distribution — On the origin 

 and past history of the raccoon — On caves and their contents as 

 illustrating the geological history of the fauna — The former 



