SEMNOPITHECUS MAURUS. 



narrowed at the jaws. The general character of the face is a flatness above, and a 

 protrusion of the maxilte ; but the appearance of the face differs greatly in old and 

 in young subjects. The maxillee become extended as the animal advances in age, 

 and in young subjects the facial angle is proportionally greater. 



The face is regularly circumscribed by hairs, which are long, and closely 

 appHed to the head ; the forehead, which is gradually sloping, is entirely concealed 

 by them. The orbits of the eye are rather prominent, and the bones of the nose 

 short. The nose consists of an angular ridge, which is considerably elevated between 

 the eyes, and terminates, without any fleshy protuberance, by a membrane which is 

 gradually attenuated below, and on each side of which the nostrils are placed. 

 These are large, oblong, slightly curved, and pass backward into the cranium, in a 

 horizontal direction. From the termination of the nose to the mouth, a considerable 

 space intervenes ; but the lips are small and thin, so as to exhibit, when slightly 

 retracted, the interior of the mouth. The chin is short and small ; a circle of gray 

 hairs incloses the mouth in the adult animal ; and on the chin the hairs have a 

 disposition downward, so as to exhibit the appearance of a beard. The upper part 

 of the face is nearly naked ; a few straggling, stiff hairs are scattered on the cheeks 

 and the upper lip, and on the more prominent part of the nose an interrupted series 

 is observed. The irides of the eyes are of a dark brown colour. The ears are 

 concealed from view by the long hairs which cover the lateral parts of the head ; 

 they are margined, and both in form and disposition of external parts, closely 

 resemble these organs in man. The neck is short, and considerably contracted. The 

 trunk is of great length, broad and robust about the shoulders and the breast, and 

 gradually of smaller dimensions towards the loins. The buttocks are marked with 

 very large, rough callosities. The mammae, in the adult female, are lengthened and 

 cylindrical. The tail is as long as the body and head taken together; in some 

 individuals, and particvilarly in young subjects, it exceeds these parts in length : it 

 is cylindrical during the greatest part of its length ; the base is gradually tapering, 

 and the tip is thickened, and terminated by a close tuft of long hairs, of an ovate 

 form. 



The most distinguishing character of the animals of this genus is the great 

 length of the extremities : the arms and forearms are particularly slender ; the 

 posterior extremities are more lengthened and more robust ; so that in the most 

 usual attitvide of moving, the rump is considerably elevated. The hands and fingers 

 of the anterior extremities have a length and delicacy proportioned to these members; 

 the thumb is very short and small, and removed far from the fingers. The hands of 

 the posterior extremities are of extraordinary length, calculating, from the origin of 



