THE EXTERNAL FORM OF ANTHROPOID APES. 43 



thus still more out of proportion with the thick 

 trunk than is the case with a young male. 



The orang-utan's skin is of a greyish blue coL)ur, 

 sometimes mixed with brown, but the greyish blue 

 shade is predominant. A yellowish or brownish 

 grey is less common. Round the eyes, nostrils, 

 upper lips, and chin there is often a ring of a dirty, 

 yellowish brown colour, forming a strange contrast 

 with the general bluish grey tone of the face. The 

 arras, legs, hands, and feet are black or greyish 

 black, more rarely brown or reddish brown. 



The hairy coat of the orang-utan consists of long, 

 curved, waving bristles, and some scanty downy 

 hairs. On the back of the head, on the shoulders? 

 back, and hips I have measured hairs fiom 220 to 

 235 mm. in length. In other individuals they were, 

 however, much shorter — 20, 40, or 60 mm. long. 

 There is often a natural parting of the hair of the 

 head, which falls asunder on either side. In some 

 cases there is no parting, and the hair streams wildly 

 down; and in others, again, it stands upright, stiffening 

 from the sides and top of the head in a demoniacal 

 manner (Figs. 7 and 9). A beard frequently en- 

 circles the cheeks and chin. The hair grows up- 

 wards and outwards on the neck and fore-part of the 

 throat, on the shoulders, back, breast, belly, upper 

 arms, and thighs, while it takes the opposite 

 direction on the forearm. On the wrist the hair 

 grows in the manner described in the case of the 

 gorilla. There is only a scanty growth of hair on 

 the breast and belly, and it is also short and weak 

 on the face, ears, and backs of the hands and feet. 



