THE MALAYAN BABOONS. 283 
disposition it appears to be more amiable and docile than the 
African Baboons. Some kinds of Monkeys, as Mr. Darwin 
observes, which have moveable ears, and fight with their 
teeth, draw back their ears when irritated just like Dogs, and 
then they have a very spiteful appearance. . . . Other 
kinds 
other animals—retract their ears, “and utter a slight jabbering 

and this is a great anomaly in comparison with most 
noise when they are pleased by being caressed. I observed this 
in the Cynopithecus niger. . . . With the Cynopithecus the 
corners of the mouth are at the same time drawn backwards 
and upwards, so that the teeth are exposed. Hence this ex- 
pression would never be recognised by a stranger as one of 
pleasure. The crest of long hairs on the forehead is depressed, 
and apparently the whole skin of the head is drawn backwards. 
The eyebrows are thus raised a little, and the eyes assume a 
staring appearance. The lower eyelids also become slightly 
wrinkled ; but this wrinkling is not conspicuous, owing to the 
permanent transverse furrows on the face.” When enraged, the 
Cynopithecus niger depresses the crest of ha'r on its forehead, 
and shows its teeth ; “‘so that,” as Mr. Darwin continues, “ the 
movements of the features from anger are nearly the same as 
those from pleasure; and the two expressions can be dis- 
tinguished only by those familiar with the animal.” See the 
figures in Mr. Darwin’s “ Emotions in Man,” &c., p. 136. 
