,132 PAP 10 



gray at base, pale yellow at tips ; shoulders and arms, mixed yellow, 

 brown, and black, similar in color, but paler than body ; hands and feet 

 blackish brown speckled with pale yellow ; under parts grayish white 

 with a reddish tinge ; tail blackish brown, hairs ochraceous at base near 

 root of tail. 



Measurements. Total length, 863.60; tail, 323.85; foot, 139.70. 

 Ex Desmarest's type, Paris Museum. 



This animal is a female and not full grown. It has the reddish 

 coloring so characteristic of P. p.\pio, and nothing of an olivaceous hue 

 to warrant the name given by Geoffroy. 



In a letter to Dr. Gray, J. J. Monteiro, gives the following account 

 of what is probably this species, under the name of aniibis, as observed 

 by him in Angola, of which a J*, and $, were presented to the British 

 Museum. The country is hilly and cut by deep, dry and solitary gullies, 

 and grand rocky ravines. The vegetation is restricted to dry, prickly 

 shrubs, a few roots of grass, and certain species of thick club-stemmed 

 dwarf shrubs, bearing a few leaves only during the few months of the 

 year in which rain falls ; the rest of the year nothing is seen but dry 

 rock and leafless firewood, scorched and burnt month after month by 

 the constant tropical sun. At distances far apart, brackish water is 

 sparingly obtained by Zebras, these Monkeys, and other tropical 

 animals, by excavating holes in the sand at the bottom of the gullies. 



The principal food of these Apes is the root and stem of the thick, 

 tuber rooted shrubs (Webwitschia?) above mentioned. Part of the 

 root of these plants grows above the surface of the ground, and these 

 Monkeys gnaw it off as a sheep does a turnip or mangel-wurzel, their 

 dog-like elongated jaws, and perhaps dentition, appearing to him 

 specially adapted to this manner of feeding. 



They are gregarious ; he once counted fifteen together, and a few 

 days previous to his writing, not less than thirty to forty came down 

 to drink at a well he had opened at the copper mines. He was then 

 engaged in exploring at about four miles inland from Cuio Bay. Two 

 were captured alive at Equimena, a place twelve miles south. 



They run very fast, on all-fours, in a kind of sideway gallop, the 

 young ones holding on to the back of the dams. It seems that he has 

 not been able to ascertain exactly their geographical distribution either 

 in longitude or latitude from the bay, though he believes it does not 

 reach northward of the River Quanza. "It perhaps deserves to be 

 mentioned that in the vicinity of the rivers in that part of the coast, 

 the vegetation assumes a more luxuriant character ; but these rivers 



