12 ERYTHROCEBUS 
Genl. Char. Forearms, to and including hands, yellowish white; 
nose white. 3 
Color. Nose, lips and cheeks yellowish or cream white; brow 
band black, with long white hairs intermingled, this band extending 
back to ear where it forks, the short arm going to beneath ear, the long 
arm on either side of crown to nape; crown chestnut bay; nape and 
upper parts grizzled cinnamon rufous; the hairs cinnamon rufous at 
base, bay on terminal half, a subterminal band of buff, and tip black; 
shoulders and arms to elbows grizzled, with black dominating; a 
cinnamon rufous stripe from middle of back to tail; rump dark bay; 
thighs nearly to knees bay, paler than rump; outer side of thighs, 
beneath the bay color, and legs to ankles white; inner side of limbs ~ 
white; under parts scantily haired, ochraceous, or ochraceous buff, 
the tips of hairs white; hands and feet yellowish white; tail above bay, 
beneath white. Ex type United States National Museum. 
Measurements. Total length, 870; tail, 640, (skin). Skull: total 
length, 149; occipito-nasai length, 114.4; Hensel, 118.3; zygomatic 
width, 98.5; intertemporal width, 70.8; palatal length, 68; median 
length of nasals, 22.7; length of upper molar series, 32.1; length of 
mandible, 118.4; length of lower molar series, 41.7. Ex type United 
States National Museum. 
This species singularly enough is nearest to E. KERSTINGI from 
West Africa. Two specimens were obtained, both males. They were 
in troops of from four to a dozen, in entirely open country and 
were very difficult to approach. 
My friend the Rev. Dr. W. S. Rainsford, who obtained this 
monkey in East Africa, (specimen presented to Am. Mus. Nat. Hist., 
N. Y.,) says: “The monkey, (Erythrocebus whitei) I shot on the 
N’soia Plateau. It is a very shy and very active species living on a 
level country where there are no high trees, often no trees at all. 
Indeed it avoids high and thick woods, where other monkeys are usually 
found. This flat country is so infested with lions and leopards that all 
the activity and cunning of the native is frequently called into play to 
escape them. I have even known lions of that region to hunt down 
and devour a cheetah. 
“I saw the monkeys several times but only once did I succeed in 
getting a shot. I never saw more than three of them together and I 
found them harder to stalk than any other animal I followed in 
Africa.” 
