2S0 CALLICEBUS 



212\ V, 1855, p. 116; I. Geoff., Cat. Primates, 1851, p. 40; 

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

 152, 154; Reichenb., Vollstand. Naturg. Afifen, 1862, p. 23, 

 fig. 61 ; Schleg., Mus. Pays-Bas, Simise, 1876, p. 240. 



D'ORBIGNY'S TITI MONKEY. 



Type locality. Province of Sara, Bolivia. 



Geogr. Distr. Found in high forests, Province of Sara, Central 

 Bolivia, alt. 2,100 feet. British Museum Collection. 



Color. Top and sides of head reaching to the throat, varying 

 from orange rufous and black to cinnamon rufous and black; upper 

 parts varying from dark grayish brown to a reddish brown washed 

 with gray, grading into deep russet on the rump ; flanks, hairs broadly 

 tipped with grayish white, forming a whitish fringe along the sides ; 

 arms to elbows like back; forearms silvery gray and black, the hairs 

 black at base with silvery gray tips ; outer side of legs gray and deep 

 russet; inner side of limbs, and under parts dark cinnamon rufous, 

 darkest on belly ; hands and feet yellowish gray to iron gray ; fingers 

 and toes whitish; tail, grayish white at base, yellowish gray for the 

 remainder ; hairs on ears white ; face covered with short white hairs. 



Measurements. Total length, 745; tail, 415; foot, 90; ears, 35. 

 Skull : occipito-nasal length, 55.6 ; Hensel, 43.9 ; zygomatic width, 47.5 ; 

 palatal length, 15.7; median length of nasals, 7.4; length of upper 

 molar series, 14; length of mandible, 42.1; length of lower molar 

 series, 16. Ex specimen 7.8.2.12. British Museum. 



The specimen from which D'Orbigny's figure was taken is in the 

 Paris Museum, and marked "type de la figure." It is greatly faded, 

 but still in the main corresponds to the description given above from 

 fresh examples in the British Museum, obtained in practically the 

 same locality from which D'Orbigny's type came. The real type of 

 C. DONACOPHILUS caunot be identified, as all the examples are marked 

 as 'types' and there is no way of ascertaining which was the one origi- 

 nally described. 



Callicebus EMILIA Thomas. 



Callicebus emilia Thos., Ann. Mag. Nat. Hist., VII, 8th Ser., 1911, 

 p. 606. 



Type locality. Lower Amazon. Type in British Museum. 



Genl. Char. Back, bay or hazel. 



Color. Upper surface rich rufous bay or hazel ; hairs on nape 

 grizzled brown and whitish, tips rufous ; crown grayish ; ears ashy 

 gray, long hairs with black tips ; indistinct line on flanks, arms from 



