1904.] 



ANTHROPOID APES. 



425 



and over the arch of the forehead 141-160 mm. The breadth at 

 the canines is 50-60 mm. in the S 6 and 54-68 mm. in the $ 5 . 

 The thinnest place in the zygomatic arch is 7-10 mm. (always at 

 least 9 mm. in old S 6)- 



3. SiMiA VELLEROSUS (Gray), P. Z. S. p. 181 (1862). (Plate 

 XXIV. and Text-figs. 108 & 109, fig. 2.) 



Distribution. Northern Oamaroons and higher mountains 

 fiu'ther south. 



Distinctive characters. External : ears very small, 50 x 45 mm. 

 Beard very long and thick, completely surrounding face. Arms 

 very long, at least 750 mm. in length ; face brown (TF. R.). 

 (Colour of hair in fuhy adult old S S is yellowish grey. — W. R.) 



Text-fig. 108. 



Skull of Simia vellerosws (Gruy). 



Cranial characters : facial portion of skull slender, flat in fi-ont 

 of nostrils ; breadth behind canines from 1 mm. less to 1 mm. 

 moi'e than between the molars. Brain-case, measured from the 

 glabella to the jjrotubeixtntia occijoitalis externa much shoi-ter in 

 the S (S than in the $ §, viz. 131-132 mm. and 137 mm. 

 respectively; measured over the arch of the forehead 150-152 

 mm. and 160 mm. respectively. Breadth at canines in S 6 

 62-63 mm., in $ $ 55 mm. The thinnest place in the zygomatic 

 arch is 6-9 mm. high. 



