1 62 ALLEN'S NATURALIST'S LIBRARY. 



Characters. Fur long and similar in character to that of 

 C. torquata ; chest and under side of body pale grey or dark 

 reddish-grey ; hands and feet grey ; back of the same colour ; 

 tail mottled grey, the hairs being grey, with black tips. 



In some species the fur varies from dark grey washed with 

 rufous, to almost white, the red wash, where it occurs, some- 

 times deepening, or almost vanishing. 



Distribution. Mr. Bates observed this species at Serra dos 

 Parentins, in the Lower Amazon Region above the confluence 

 of the Tapajos with the Amazon. It also extends to Bolivia 

 and Peru. 



V. THE ORABASSU TITI. CALLITHRIX MOLOCH. 



Cebus moloch, Hoffman, Mag. Gesell. Berlin, x., p. 97 (1807). 

 Callithrix moloch, Geoffr, Arch. Museum, iv., p. 33, pi. 3(1844), 



id., Ann. Mus., xix., p. 114 (1812); Gray, Cat. Monkeys 



Brit. Mus., p. 55 (1870). 



Characters. Differs from the Reed Titi in having the cheeks, 

 chest, and belly red. Hands and feet of the same colour as 

 the back, grey. 



The cerebral convolutions of this animal are, according to 

 M. C. Dareste, exactly those of a " Maki," or Lemur, 



Distribution. Throughout Brazil. 



VI. THE ORNATE TITI. CALLITHRIX ORNATA. 



Callithrix discolor, Verreaux, M.S. (nee Geoffr.). 



Callithrix ornata, Gray, Ann. and Mag. Nat. Hist., xvii., p. 57 



(1866). 

 Callithrix ornatus, Gray, Cat. Monkeys Brit. Mus., p. 55 



(1870). 



