THE MALAYAN BABOONS. 283 



disposition it appears to be more amiable and docile than the 

 African Baboons. Sonre 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 — and this is a great anomaly in comparison with most 

 other animals — retract their ears, " and utter a slight jabbering 

 noise when they are pleased by being caressed. I observed this 

 in the Cyiiopitheciis niger. . . . With the Cynopitheciis 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 

 Cy7iopithecus 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. 



