216 ZOOGEOGRAPHICAL REGIONS 



NOTOGAEIC REALM. 



(5) Neotropical region. 



(6) Australian region. 



Each of these regions may now be considered in 

 a Httle detail. 



Beginning with the Holarctic region, we find that 

 the western or Nearctic section has no primates, and 

 the eastern or Palaearctic only those species of Semnopi- 

 thecus andMacacusalreadymentioned (pp. 77-8). In the 

 Palaearctic section the sheep and goats are well repre- 

 sented, but to the west they are few (cf. p. 82). Both 

 sections have oxen. The antelopes are scantily repre- 

 sented in both, while deer are abundant. To the east, 

 but not in the west, camels and horses occur. Elephants 

 do not occur in either division, but both are rich in carni- 

 vores. Among the special forms it is noticeable that 

 the badger is peculiar to the Old World, while the 

 Nearctic section shares the skunk and raccoon with the 

 Neotropical region. In both divisions rodents are very 

 numerous, but this is a fact which has already been 

 sufficiently discussed. Among the insectivores the 

 mole (Talpa) is a form pecuhar to the Old World, 

 where it extends into the Oriental region. 



The bird faunas of the two regions differ from each 

 other somewhat markedly, but this is partly because 

 both regions receive many seasonal immigrants from 

 the hotter land-masses Ijdng to the south of them. 

 The differences also chiefly aflEect genera or even species, 

 rather than orders or famiUes. Two familiar famihes 

 of the Old World are, however, absent in the New. 

 Thus North America has no true starlings, their place 

 being taken by the hang-nests or Icteridae, to which 

 the rice-bird or boboHnk (Dolichonyx) belongs. The 



