MAMMALIA. 



31 



almost always a callus on the seat and cheek pouches; tail 

 never prehensile (clinging). Six remarkable genera. 



Genus I. Pithecus, Geoff. Ourangs. 



No tail, nor callosities, nor cheek-pouches. Of all animals 

 the ourang is considered as approaching most nearly to man 

 in the form of his head, height of forehead and volume of 

 brain ; but many exaggerated descriptions of this resemblance 

 have arisen, no doubt, from the fact that young individuals 

 only were seen. There is every reason to believe that with 

 age the likeness decreases as the muzzle becomes more pro- 

 minent. The body of the Ourang- Outang is covered with 

 coarse red hair, the face bluish, and the hinder thumbs very 

 short compared with the toes. [Cochin-China, Malacca, Bor- 

 neo.] 



Genus II. Hilobates, Illig. Gibbons. 



A callus on the seat ; arms very long ; neither tail nor 

 cheek pouches. [The Indies and their Archipelago.] 



Genus III. Cercopithecus, Erxl. Monkeys Proper. 



Tail long ; limbs elongated ; form slender ; head rounded ; 

 muzzle moderately projecting; large cheek-pouches; callosi- 

 ties ; size middling. The length of the hinder limbs gives 

 these animals great facility in leaping. They abound in Af- 

 rica, live in troops, and do much damage to gardens and fields 

 under cultivation. They are easily tamed. 



Genus IV. Semnopithecus. 



Muzzle as in the Gibbons ; length of the limbs dispropor- 

 tionate ; tail very long ; callosities ; no cheek pouches ; the 

 larynx furnished with a sac. They differ from the long 

 tailed Monkeys by having an additional small tubercle on 

 the last of the inferior molars. [Eastern part of Asia.] 



Genus V. Inuus, Cuv. Magots, 



Cheek pouches ; callosities ; a simple tubercle supplying 

 the place of tail ; completely covered with a light brown hair. 

 " Of all Monkeys it is the one that suffers the least from our 

 climate," says Cuvier. He is originally from Barbary, but 

 is said to have become naturalized in the most inaccessible 

 parts of the rock of Gibraltar. 



