252 CALLICEBUS 



Stud. Zool. Fam. Reg. Anim. Natur., fasc. I, 1856, pp. 151, 

 153 ; Reichenb., Vollstand. Naturg. Affen, 1862, p. 23. fig. 60; 

 . Bates, Nat. Amaz., II, 1863, p. 98; Gray, Cat. Monkeys, 

 Lemurs and Fruit-eating Bats, Brit. Mus., 1870, p. 55 ; 

 Schleg., Mus. Pays-Bas, Simiae, 1876, p. 239; von Pelz., Bras. 

 Saugeth., 1883, p. 10; Weldon, Proc. Zool. Soc. Lond., 1884, 

 p. 89, fig. 3 ; Forbes, Handb. Primates, I, 1894, p. 162. 

 Saguinus moloch Less., Spec. Mamm., 1840, p. 151 ; Id. Nouv. 

 Tabl. Reg. Anim., 1842, p. 8. 



THE ARABASSU TITI. 



Type locality. Banks of the Rio Para. 



Geogr. Distr. Banks of the Rio Para near the mouth of the Rio 

 Tapajos, Lower Amazon, Brazil. 



Genl. Char. Cheeks, chest and belly reddish. 



Color. Top of head, nape, shoulders and outer sides of arms, 

 brownish gray, the hairs with black tips ; rest of upper parts reddish 

 brown, hairs annulated with black ; hind limbs similar to arms but 

 paler; sides of head, under parts and inner side of limbs orange red; 

 hands and feet gray ; tail reddish brown and black at base, black and 

 gray washed with brown for remainder, the hairs being pale brownish 

 gray with black tips. Ex type Paris Museum. 



Measurements. Size of C. cupreus. Skull : occipito-nasal length, 

 53; Hensel, 40; zygomatic width, 36; intertemporal width, 31 ; length 

 of nasals, 10; length of upper molar series, 15 ; length of mandible, 36; 

 length of lower molar series, 17. 



At Aveyros on the Amazon, Bates (1. c.) met with this species, 

 the only monkey in that locality, and which was called by the Indians 

 Thacapu-sai. Although allied to the Cebi he found that it possessed 

 none of their restless activity, but was dull and listless. It goes in 

 small flocks of five or six individuals, and runs along the main boughs 

 of the trees. He obtained an individual one morning at sunrise on a 

 low fruit tree behind his house, the only instance in his experience of 

 one being captured in such a situation, for it must have descended to 

 the ground and walked some distance to reach it. Though kept as a 

 pet by the natives, it is not very amusing and does not live long in 

 captivity. 



CaLLICEBUS CINERASCENS (Spix). 



Callithrix cinerascens Spix, Sim. et Vespert. Bras., 1823, p. 20, pi. 

 XIV, juv. ; Reichenb., Vollstand. Naturg. AflFen. 1862, p. 24, 

 fig. 67; Forbes, Handb. Primates, I, 1894, p. 161. 



