LYON] THE HARES AND THEIR ALLIES 



439 



VIII. GEOGRAPHICAL DISTRIBUTION 



The family Leporid?e is widely distributed. Members of it are 

 found in every portion of the world except the general regions 

 embraced by Australia and neighboring islands, and by Madagascar 

 and neighboring islands. In the terms of zoogeographers they are 

 found throughout the Arctogseic realm (Lydekker '96) with the 

 exception of the Malagasy region, and one genus is found in the 

 Neogseic realm. No member of the family is found in the Notogseic 

 realm, nor in the Malagasy region of the Arctogseic realm. 



The genus Lcpiis has the same general distribution that the family 

 has, except that no members so far as known are found in the 

 Neogseic realm. This genus is found most abundantly in the Hol- 

 arctic region. 



The subgenus Lcpus is mainly confined to the Holarctic region, 

 but in North America one species, Lcpus cainpcstris, extends into 

 the Sonoran region (Lydekker '96) or Arid Transition faunal area 

 (Merriam '98). 



The subgenus Pcecilolagus, so far as known, is found in that por- 

 tion of North America which belongs to the Holarctic region, the 

 Canadian, Hudsonian, and Transition zones. 



The subgenus Macrotolagus is chiefly confined to the western arid 

 portion of the Sonoran region of Lydekker or the arid portion of 

 Merriam's Austral region embracing the Upper and Lower Sonoran. 



The genus Sylvilagns is restricted entirely to the New World, 

 where it extends throughout the Sonoran region of the Arctogseic 

 realm of Lydekker, and southward more or less extensively through- 

 out the Neogseic realm, or it may be said to occur throughout the 

 Transition zone of Merriam and all the zones southward. 



Brachylagns has a rather small distribution in the Lfpper Austral, 

 called Upper Sonoran faunal area, in southern Idaho, northern 

 Nevada and California, and eastern Oregon and Washington. 



Limnolagus is found, in general, throughout the Austroriparian 

 faunal area, occupying the greater part of the South Atlantic and 

 Gulf states. 



The genus Orycfolagiis occurs in southern and western Europe 

 and northern Africa, in general, the southwestern portion of 

 Lydekker 's Holarctic region in the Old World. 



The genus Proiiolagiis, so far as known, is confined to the southern 

 portion of Africa or the Ethiopian region. 



The remaining genera of the Leporidoe contain but a single species 

 each, and have a very limited distribution. 



