246 CALLICEBUS 



Measurements. Total length, 850; tail, 520, (skin). Skull :occip- 

 ito-nasal length, 57.3; Hensel, (skull broken); zygomatic width, 

 40.6; palatal length, 29.1 ; median length of nasals, 9.3 ; length of upper 

 molar series, 14.2; length of mandible, 41.3; length of lower molar 

 series, 15.8. 



This species differs in many ways from all others of the genus. 

 It is the only one of the C. cupreus style with a uniformly colored 

 mantle, and one so long and thick as to resemble a mane; the red on 

 arms and legs extends much higher than on any other species, and 

 the fur everywhere is longer and thicker. A single specimen was 

 procured by Mr. Buckley at Andoas. 



Catjjcebus egeeia Thomas. 



Callicebus egeria Thos., Ann. Mag. Nat. Hist., II, 1908, 8th Ser., 

 p. 89. 



Type locality. TefFe, Middle Amazon, Brazil. Type in British 

 Museum. 



Color. Top of head grizzled gray ; neck and upper parts grizzled 

 grayish brown; arms from elbows, legs from below knees, and feet a 

 rather dark burnt sienna hue; hands like feet but the fingers grayish 

 with a rufous wash ; arms above elbows, and legs above knees, grizzled 

 grayish brown like back ; cheeks, throat, and under parts with under side 

 of limbs, dark burnt sienna; tail grizzled gray and black, darkest on 

 basal third. Ex type British Museum. 



Measurements. Total length, 760 ; tail, 430 ; hind foot, 84. Skull : 

 occipito-nasal length, 67.4 ; Hensel, 48.6 ; zygomatic width, 46.7 ; palatal 

 length, 27.9; median length of nasals, 17.4; length of upper molar 

 series, 14.8; length of mandible, 47.1; length of lower molar series, 

 16. Ex type British Museum. 



The type is a young adult male, paler in general coloration than 

 C. CUPREUS to which it bears the closest resemblance, but differs 

 in its gray crown. 



Cai.licebus leucometopa (Latorre). 



Callithrix cuprea leucometopa Latorre, Ann. Soc. Espagn. Hist. 

 Nat., No. 29, 1900, p. 83. 



Type locality. Ecuador. Type in Madrid Museum. 



Geogr. Distr. Ecuador. 



Genl. Char. Similar to C. cupreus but forehead white or grayish 

 white, top of head gray. 



