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Ch. XXXVIII.] MAMMALIA OE THE PALJ^ARCTIC EEGION. 



341 



ssnm 



almost 



om Canada to the Gulf of Mexico 



to tlie general rule. The opossum of Texas {DidelpMs ccmcri- 

 vora) is different from that of Virginia^ and other species of 

 the same genus are found Avestward of the Eocky Mountains. 

 in California^ for example, where almost all the 

 differ specifically from those in the United States. 



m amm 



Falcearctic region, — We 

 region, comprising Europe and Northern Asia as far as Japan, 

 and also including Africa north of the desert of the Sahara. 

 Selecting our examples here, as before, chiefly from the 

 mammalia, we may first mention the extraordinary range from 

 east to west of the European species of quadrupeds ; for no 

 less than 44 of these, out of 58, are common to Europe and 

 Amoorland, or that part of North-eastern Asia which lies 

 between latitude 45' and 65° north. In the same group 



are some species which have not so wide a range 



there 



great distances 



east and west, but which extend foi _^^ 



a north and south direction. Thus the tailless hare, or Pica, 

 passes far into the Arctic latitudes, and the tiger, Felis Tigris, 

 into the tropical, even as far south as Java. 



The propriety of considering Morocco, Algeria, and Tunis 

 as part of the same province as Europe and Northern Asia 



mammals 



for the birds, reptiles, insects, and plants are all decidedly 



of Palsearctic forms. 



Mr. Wallace 



given a table showing that no less than thirty-three of the 

 Algerian species are absolutely identical with European or 

 West- Asiatic quadrupeds ; fourteen more are representatives 

 of European genera, and ten belong to genera of Western 

 Asia and Siberia. But, on the other hand, seven or eight 

 species have been supposed to give an Ethiopian or extra- 



Nortl 



are all desert-haunting species 



an antelope, a 



They 



{Macams Inuns) , i\e, same as that which inhabits the rock 

 01 (Gibraltar, a lion, leopard, cerval, and hunting leopard. 

 These same large feline species range through the whole of 

 Africa from the Mediterranean to +>.a n.-n. ...a ^o,. oo..o 



f 



