THE TAMARINS. 147 



XII. THE PIED TAMARIN. MIDAS BICOLOR. 



Midas bicolor, Spix, Sim. et Vespert. Bras, p. 31, pi. 24, fig. i 



(1823). 

 Hapale bicolor, Wagner in Schreb., Saugeth., v., p. 135, pi. 12 



(1855); Schl., Mus. Pays Bas, vii., p. 257 (1876). 

 Seniocebus bicolor, Gray, Cat. Monkeys, Brit. Mus., p. 68 



(1870). 



Characters. Head naked in front of the ears in the adult ; 

 hind-part of the head covered with long white hairs ; ears ex- 

 exposed, naked ; tail not ringed, the upper side black ; nose and 

 lips black ; neck, chest and arms white ; face, body, and hind- 

 limbs brown ; under side of tail, inner side of limbs, and 

 the abdomen ferruginous. 



In the young animal, the face is rather hairy and the fore- 

 head naked. (Gray.} 



Distribution. The eastern bank of the Rio Negro, a northern 

 tributary of the Amazon. Mr. Bates obtained a specimen 

 at Barra, where it was rather common in the forest; and, 

 he adds : " This place, a waterfall near Barra, which its citi- 

 zens consider as the chief natural curiosity of their neighbour- 

 hood, is classic ground to the naturalist, from having been a 

 favourite spot with the celebrated travellers Spix and Martius, 

 during their stay at Barra in 1820. Von Martius was so much 

 impressed by its magical beauty, that he commemorated the 

 visit by making a sketch of the scenery, to serve as background 

 in one of the plates of his great work on the Palms." 



Hc,Wts. Keeping together in small troops, running along 

 the main boughs of the loftier trees, climbing perpendicular 

 trunks, but never taking flying leaps. 



