242 GEOGRAPHICAL ZOOLOGY. [part iv. 



exclusivply South American family is really derived from Europe, 

 where it has long been extinct. 



Family 69.— LAGOMYID^. (1 Genus, 11 Species.) 

 General Distribution. 



Neotropical I Nearctic I Pal^arctic I Kthiopian I Oriental | Australian 

 SrB-BEoioNs. Sub-regions. | Sub-regions. SuB-RtoioNs. Sub-reoions. Sub-rkoions. 



The LagomyidcT, or pikas, are small alpine and desert animals 

 which range from the south of the Ural Mountains to Caslimere 

 and the Himalayas, at heights of 11,000 to 14,000 feet, and 

 northward to the Polar regions and the north-eastern extremity 

 of Siberia. They just enter the eastern extremity of Europe as 

 far as the Volga, but with this exception, seem strictly limited 

 to the third Palffiarctic sub-region. In America they are con- 

 fined to the Eocky Mountains from about 42° to 60' north latitude. 



Extinct Lagomyidm. — Extinct species of Lagumys have occurred 

 in the southern parts of Europe, from the Post-Pliocene to the 

 Miocene formations. Titanomys, an extinct genus, is found in 

 the Miocene of France and Germany. 



Family 70.— LEPORID^. (1 Genus, 35-40 Species.) 



The Hares and Rabbits are especially characteristic of the 

 Nearctic and Palaearctic, but are also thinly scattered over the 

 Ethiopian and Oriental regions. In the Neotropical region they 

 are very scarce, only one species being found in South America, 

 in the mountains of Brazil and various i)arts of the Andes, while 

 one or two of the North American species extend into Mexico 



