distribution of monkeys and lemurs 235 



Deductions. 



1. The Order Quadrumana, or Monkeys, contains about 

 212 species, divisible into twenty genera and four families. 



2. Monkeys are found only in the tropical and sub- 

 tropical portions of the Eastern and Western Hemispheres, 

 and are absent in Australia and Madagascar. 



3. The Monkeys of the Eastern and Western Hemispheres 

 are quite distinct in structure, and belong to different families. 



4. In the Western Hemisphere Monkeys are restricted 

 to the Neotropical Region, not occurring north of 20° 

 N. lat., or south of 30° S. lat. 



5. In the Eastern Hemisphere some few species of 

 Monkeys are met with as far north as 40° N. lat., and in 

 Africa descend to 35° S. lat. 



6. The Monkeys of the Ethiopian and Oriental Regions 

 belong to distinct genera. 



7. The Anthropoid Apes are restricted to the tropics of 

 Africa and Asia, the most highly organized of them being 

 the Chimpanzees of Africa and the Orangs of Asia. 



Section VII. — Distribution of the Lemurs 



The Lemurs, which by many recent authorities are united 

 with the Monkeys to form the Order Primates, but which it 

 is, in some respects, more natural to retain as an Order by 

 themselves, number altogether some fifty species — only one- 

 fourth of the number of the Quadrumana. They are also very 

 different in geographical distribution, thirty-five out of the 

 whole series being confined to the Malagasy Sub-region, whilst 

 the few remaining forms are met with only in isolated portions 

 of the Ethiopian and Oriental Regions. Besides the family of 



