14 ERYTHROCEBUS 
the black chin. The latter however is said to be constant. Ex type 
Berlin Museum. 
ERYTHROCEBUS LANGELDI Matschie. 
Erythrocebus langeldi Matsch., Sitzungsb. Gesell. Naturf. Freunde, 
1905, p. 276. 
Cercopithecus langeldi Pocock, Proc. Zool. Soc. Lond., II, 1907, 
p. 745. 
Type ae Garu, Cameroon, West Africa. Type in Berlin 
Museum. 
Genl. Char. Nose black; tail rather short. 
Color. Top of head ochraceous rufous; upper parts of body 
reddish orange buff; flanks orange buff; black line across forehead 
extending backward to ears; hairs on fore part of cheeks brownish 
black, hind part white; sides of neck, arms and legs below knees, buff ; 
lips and chin with black and white hairs mixed; throat white, rest of 
under parts and inner side of arms yellowish white; thighs orange 
buff ; inner side of legs white; hands and feet silvery white with buff 
centers ; tail like back at root, remainder above ochraceous buff, beneath 
whitish. Ex type Berlin Museum. 
Measurements. Total length, 905; tail, 325. Ex type Berlin Mu- 
seum. 
There are two specimens of this form in the Berlin Museum 
one of which is quite immature, and that is the type. It is so young I 
have not deemed it worth while to give the dimensions of the skull. 
Unfortunately of the older and larger example there is no skull. Both 
specimens agree in color, and are much darker than E. BAUMSTARKI, 
and also have the black stripes on head. 
ERYTHROCEBUS ALBIGENIS Elliot. 
Erythrocebus albigents Elliot, Ann. Mag. Nat. Hist., IV, ‘Sth. Ser., 
US, Be nanos 
T'ype locality. “Egyptian Soudan’; exact locality not Gwe: 
Type in British Museum. ) 
Genl. Char. Black brow band extending to crown, not to ar ; 
thighs mostly white. Hair on hind neck and shoulders very long, mane- 
like, * 
Color. Adult male. Face and nose black; narrow line on edge 
of upper lip white; black brow band mixed with white over eyes, 
turning upward at corner of eyes and encircling the crown; no black 
