242 CALLICEBU S 



Color. The general appearance of this animal shows a burnt 

 umber color, the hairs having a slaty base and then annulated with 

 two slate and two clay color bands, and a dark tip. Face naked^ 

 black ; top of head mixed dark ochraceous rufous and black, the black 

 predominating on the forehead; the rimip is redder than the back 

 being somewhat of a burnt sienna color; outer side of limbs, hands 

 and feet, very dark claret brown; sides of head, throat, inner side of 

 limbs and under parts maroon ; tail for one third the basal length 

 black, the hairs being chestnut with broad black tips ; rest of tail mixed 

 black and yellowish gray or very pale clay color, the under parts of the 

 tail being almost altogether of this color ; ears black. Ex type British 

 Museum. 



Measurements. Size about the same as C. cupreus. Skull : occip- 

 ital region has been cut off. Intertemporal width, 32 ; zygomatic width, 

 41 ; palatal length, 21 ; width between last molars, 12 ; breadth of brain- 

 case, 35 ; median length of nasals, 9 ; length of upper molar series, 14 ; 

 length of first upper molar, 5 ; length of mandible, 42 ; extreme height 

 of mandible, 35 ; length of lower molar series, 17.5. Ex type British 

 Museum. 



This species is nearest to C. cupreus but is altogether different in 

 color, being darker in all its hues. The skulls also are not at all in 

 accord, the differences mentioned being very conspicuous when a com- 

 parison is made. The unique example is in the British Museum 

 Collection, and all that is recorded of its history is that it came from 

 Brazil, collected by Castelnau. 



Callicebus cupreus (Spix). 



Callithrix cuprea Spix, Sim. et Vespert. Bras., 1823, p. 23, pi. 



XVII ; Wagn., Schreb., Saugth. Suppl., I, 1840, p. 233 ; V, 



1855, p. 114; Reichenb., Vollstand. Naturg. Affen, 1862, p. 



23, fig. 59; Gray, Cat. Monkeys, Lemurs and Fruit-eating 



Bats. Brit. Mus., 1870, p. 54; E. Bartl., Proc. Zool. Soc. 



Lond., 1871, p. 219; Schleg., Mus. Pays-Bas, Simiae, 1876, 



p. 236 ; Thomas, Proc. Zool. Soc. Lond., 1880, p. 394 ; Forbes, 



Handb. Primates, I, 1894, p. 160, pi. XIV. 

 Callithrix discolor I. Geoflf., Archiv. Mus. Hist. Nat. Paris, V, 



1845, p. 551, pi. XXVIII; Id. Compt. Rend., XXVII, 1848. 



p. 498; Id. Cat. Primates, 1851, p. 41; Casteln., Exped. 



Amer. Sud, Mamm., I, 1855, p. 11; Wagn., Schreb., Saugth. 



Suppl., V, 1855. p. 114; Dahlb., Stud. Zool. Earn. Reg. Anim. 



