ERYTHROCEBUS 13 
ERYTHROCEBUS KERSTINGI (Matschie). 
Cercocebus kerstingi Matsch., Sitzungsb. Gesell. Naturf. Freunde, 
1905, p. 274; Pocock, Proc. Zool. Soc. Lond., II, 1907, p. 745. 
Type locality. Sokode, Togoland, West Africa. Type in Berlin 
Museum. 
Genl. Char. Like E. patas, but ochraceous rufous above instead 
of fox red. 
Color. Top of head dark ochraceous rufous, paler on sides, hairs 
tipped with black; back of neck, upper part and inner side of thighs 
ochraceous rufous, hairs tipped with buff, giving a yellowish tinge over 
all the body; narrow line on forehead extending backward to ears 
black ; nose black; lips white; cheeks grayish white, hairs tipped with 
black ; sides of neck yellowish, shoulders gray, hairs tipped with black; 
forearms and legs below knees, throat, chest, under parts of body and 
inner side of limbs grayish white; tail above dark fox red, beneath 
white. Ex type Berlin Museum. 
Measurements. Total length, 1,620; tail, 760. Skull: total length, 
150; occipito-nasal length, 121; Hensel, 104; intertemporal width, 51; 
zygomatic width, 93; median length of nasals, 22; length of upper 
molar series, 31.5; length of mandible, 106; length of lower molar 
series, 42. Ex type Berlin Museum. 
This form is precisely like E. paTas in its markings and distribu- 
tion of colors, but is not so red on upper parts, the shade being an 
ochraceous rufous darkest on center of head. A specimen in the 
British Museum from Lagos, seems referable to this form. 
ERYTHROCEBUS ZECHI Matschie. 
Erythrocebus zechi Matschie, Sitzungsb. Ges. Naturf. Freunde, 
1905, p. 276. 
Cercopithecus zechi Pocock, Proc. Zool. Soc. Lond., II, 1907, p. 
745. 
Type locality. ? Togoland, West Africa. Type in Berlin 
Museum. 
Genl. Char. Exactly like E. KERSTINGI, a little paler on sides of 
body, and with a black chin. 
The type is a young animal and has not acquired the fully adult 
coloring, the forearms and legs being still yellow, not grayish white 
like the adult. 
The differences relied upon for separating this form from E. 
KERSTINGI are very slight, only the upper parts a little paler red and 
