ERYTHROCEBUS 9 
“In captivity the Patas is lively, but very spiteful and capricious; 
as with its race in general, its evil qualities become more developed the 
more it advances in age, when its liveliness degenerates into irascibility, 
and its temper becomes morose and vindictive.” A young individual 
“had a habit when pleased, of dancing on all-fours, in a peculiar and 
measured step, which was far from being ungraceful, though, after a 
time, it became ludicrous from its monotony.” 
ERYTHROCEBUS PYRRHONOTUS (Hemprich et Ehrenberg). 
Ceropithecus pyrrhonotus Hempr. et Ehrenb., Symb. Phys., 1838, 
pl. X; Less., Spec. Mamm., 1840, p. 85; Geoff., Dict. Hist. 
Nat., III, 1849, p. 307; Wagn., Schreb., Saugth. Suppl., V, 
1855, p. 42; Reichenb., Vollstand. Naturg. Affen, 1862, p. 12, 
figs. 311, 313; Sclat., Proc. Zool. Soc. Lond., 1871, p. 623; 
Schleg., Mus. Pays-Bas, Simiz, 1876, p. 84; Sclat., Proc. Zool. 
Soc. Lond., 1893, p. 250; Forbes, Handb. Primates, II, 1904, 
p. 64; Anders., Zool. Egypt. Mamm., 1902, p. 22. 
Cercopithecus ruber Riipp., Neue Wirlbeth., Saugth., 1835, Dp. 8; 
Martin, Mammif. Anim., 1841, p. 509, ( Part.) ; Dahlb., Stud. 
Zool. Fam. Reg. Anim. Nat., fasc. I, 1856, pp. 105, 109. 
Cercopithecus patas pyrrhonotus Pocock, Proc. Zool. Soc. Lond., 
II, 1907, p. 744, fig. 193. 
NISNAS GUENON. 
Type locality. Kordofan? Type in Berlin Museum. 
Geogr. Distr. North-east Africa ; Kordofan, Darfur and Sennaar, 
at 3,000 feet elevation. 
Genl. Char. Similar to E. patas but the nose is white not black, 
and the shoulders and outer side of arms are rufous, not grayish. 
Color. Top of head fox red; back of neck and on.dorsal region 
and rump, flanks and thighs, ochraceous rufous; side of neck pale 
yellow ; black line on head and sides of head to ears; outer side of arms 
above elbows, ochraceous, hairs black tipped; cheeks, throat, under 
parts of body, inner side of limbs, forearms, legs below knees, hands 
and feet grayish white, hairs of cheeks black tipped ; tip of nose white; 
tail above fox red, beneath yellowish white; hair on ridge of nose 
black; tuft of hairs inside of ears whitish, Ex Hemprich et Ehren- 
berg’s type in Berlin Museum. 
Measurements. Total length, 1,205; tail, 650; foot, 130. Skull: 
total length, 143 ; occipito-nasal length, 115; Hensel, 106; intertemporal 
width, 45.5; zygomatic width, 88; median length of nasals, 18; length 
