ERYTHROCEBUS 15 
line from eye to ear; crown of head fox red; rest of head and hind 
neck tawny ochraceous, hairs with a subterminal yellow band and 
black tips; rest of dorsal region dark ochraceous rufous becoming a 
bright bay on flanks and rump; hairs tipped with golden, only 
occasionally one with a black tip; shoulders covered with long black 
hairs annulated with cream color; side of face white; whiskers and 
sides of neck white tinged with yellow; inner and outer side of arms 
white, hands grayish white; upper parts of thighs around hips bright 
bay like rump; rest of thighs and legs, inner and outer sides, white; 
feet yellowish white; chin, throat and chest white; middle of abdomen 
pale yellow; tail bay above, beneath yellowish white. Ex type British 
Museum. | 
_ Measurements. ‘Total length, 1,070; tail, imperfect, 430; foot, 
140, (flat skin). Skull: total length, 135; occipito-nasal length, 114; 
intertemporal width, 47.3; Hensel, 94.7; zygomatic width, 80; breadth 
of braincase, 59.3; median length of nasals, 25.2; palatal length, 47.7; 
length of upper molar series, 29.7 ; length of upper canines, 34.7 ; length 
of mandible, 81.8; length of lower molar series, 36.6. Ex type British 
Museum. | 
The skull is long and narrow, the length of cranium from the 
anterior edge of orbital ridge to occiput being nearly twice the breadth; 
rostrum rather long and nearly of equal width, being but slightly 
broader posteriorly; narial opening broad for the length; no de- 
pression behind orbital ridges, the superior outline being nearly level 
beginning to descend about the middle of the parietal; palate long, 
deep and narrow; canines very long, curved and pointed. 
This form is distinguished from E, poLiopHzus by having white 
forearms, no black line from eye to ear, thighs white not reddish, much 
deeper color of the upper parts of the body, and the rump unspeckled. 
The skull is much longer and narrower, the middle molar larger, the 
last molar and the second premolar smaller than the corresponding 
teeth in E. potiopHzus. The exact locality of the unique type which 
was received by the British Museum from Captain Flower, Director of 
the Zoological Gardens in Ghiza, Egypt, is unknown, the only state- 
ment given is that it was brought from the Egyptian Soudan. 
ERYTHROCEBUS SANNIO (Thomas). 
Cercopithecus sannio Thos., Ann. Mag. Nat. Hist., 7th Ser., XVII, 
1906, p. 173; Pocock, Proc. Zool. Soc. Lond., II, 1907, p. 
745. 
