THE APES, 
307 
angle, and the hemispheres of the brain are well furrowed. 
They have highly-colored, naked callosities over the 
ischiatic bones, and cheek-pouches for tlie temporary re- 
ception of the food. Of the baboons, with their dog-like 
muzzles and short tails, the mandrills are the most notice- 
FiG. 332.— Orang-outang or Mias. From Liit ken's Zoology. 
able, with their white beard, scarlet lips, and blue cheeks; 
they are less arboreal than the macaques of Asia, running 
about over rocks on all-fours. The common monkeys of 
menageries are the macaques {Macacits) of India. All the 
foregoing catarrhine monkeys have a simple stomach, as in 
man, but in the sncred monkey of India {Semnopitliecits, 
Fig. 330), and the African thumbless Colohits, the stomach 
is more complex. 
The apes liye in tre^g^ only occasionally walking on the 
