DOG-FACED BABOONS. 187 



afways dangerous in confinement or when attacked 

 in a wild state. The form and arrangement of the 

 teeth is nearly similar, except in size, among both 

 groups ; the principal peculiarity will be observed in 

 the form of the canine teeth, which are of remarkable 

 strength, and in the grinders, the last of which has 

 an additional point, somewhat resembling that of 

 Semnopithecus. 



The first genus to be mentioned is Macacus of 

 Lacepede, into which we have also brought the Rhesus 

 monkey, retaining the two tail-less species by them- 

 selves. The Ouanderou has generally been taken 

 for the type of this form ; but, before describing it, 

 we shall mention the Macaque of Frederick Cuvier, 

 (Simla cynocephalus, Linnaeus), which evidently forms 

 the passage between the Guenons and Baboons. It 

 is distinguished by a blunt and elongated muzzle, 

 forming a facial angle of 40 to 45 ; by the promi- 

 nency of the superciliary crests which cover the eyes, 

 and give a peculiar expression to the physiognomy, 

 and by the comparative shortness of the tail, which 

 is rarely equal to the length of the body. 



In this species we still see the colouring of the 

 Guenons, and the length of tail is nearly equal to 

 that of the individuals we last described; but we 

 want the light and agile form, and see the proportions 

 heavily and strongly^ made. The head is large, the 

 muzzle short, the nose flat, and the superciliary ridges 

 ample and lowering ; the fingers are united with a 



