110 



VERTEBRATA, 



turnal in their habits. They generally live by couples or in small families. The males share wit] 

 the females the care of rearing the young; but when these have arrived at years of discretioi 

 the fathers drive them away. The genus is divided into two branches — the Brachyures, whicl 

 have very short tails, and the Sakis proper, with long, large tails. 



The Red Saki, lirachyurus rubicund as, is about fifteen inches long, the tail having the appear 

 anee of a large hairy ball. The fur is reddish, the face vermilion, and the top of the head nearl- 

 bald. It is found in the valleys of the Upper Amazon. 



The Bald Saki, Brachyurus cairns, resembles the preceding, and is found in Brazil and Peir 

 The B. ouakary and the B. cacajo, or Pithccia mclanoccphala of E. Gcoffroy, are found on the bor 

 ders of the Orinoco. 



The White-headed Saki, Pithccia leucocephala, is one of the long-tai-led species. Its bod; 

 measures fifteen inches, and its tail seventeen. It is found in Guiana, where it is called Yarkee 

 Some other species are called Yarkee by the natives. 



The Gold-headed Saki, Pithccia ochrocephala, the P. chrysocephala, P. monachus, P. man 

 qttoina, P. inusta, P. albinasa P. satanas, P. hirsuta, P.cheiropotes, are the other species. 



THE OUISTITI, OR MARMOSET. 



THE HAPALIDJE. 



This family, as already stated, embraces the Ouistitis and the Tamarins. 



Genus OUISTITI. — Hapale : — These animals are called Squirrel Monkeys, because in size 

 sprightliness, and manner of running along upon the trees, they resemble squirrels. They are si: 

 or eight inches in length ; their fur is thick, and of various colors ; the tail long, covered with hair 

 and non-prehensile ; their nails are long and sharp, enabling them to run along upon the smallcs 

 and most flexible branches of the trees. They inhabit wooded districts, and live in small bands 

 Both male and female assist in rearing the young, though the mother occasionally cats off th< 

 head of one of her offspring. She usually carries the young on her back, but when sin 

 tired, does not hesitate to rub them off against a tree. These are less intelligent than otb 

 monkeys and have neither the cunning, nor the strength, nor the love of liberty which marks th< 

 other species. Nevertheless, they are so small, soft, gentle, and graceful, as to be pets with main 

 persons. Ladies of quality, a century ago, held them in great estimation. They are found in dir 

 fercnt parts of tropical South America. 



The Ti-ti, or Jacchus, Hapale jacchus, or Simia jacchus, described by Buffon, is generally o 

 an ash color, aud has long gray hairs standing out from the side of its head. The face is of a flesl 



