COLOBUS 129 
Type locality. Gambia, West Africa. Type not in Paris Museum. 
Geogr. Distr. Gaboon; Congo regions; forests of Gambia and 
Casamanca; West Africa. 
Genl. Char. Face flesh color, around eyes and cheeks blue; sides 
of head white; upper part of body of a bright color, not dark as in C. 
FERRUGINEUS. 
Color. Around eyes and cheeks blue, rest of face flesh color; 
ears paler; a narrow band on forehead, enlarging as it goes to the 
ears into a triangular shape, black; hairs on sides of head and jaws 
very long, white, tips of hairs pale yellow; upper parts of body brown- 
ish red, sides of body and arms bright red; outer side of thighs yellow- 
ish red; feet and hands reddish brown; throat, sides of neck, under 
parts and inner side of limbs white; tail golden brown. 
Measurements. Total length, 1,375; tail, 750. No skull. 
This species is nearest to C. PENNANTI from the Gaboon and the 
island of Fernando Po. The two species resemble each other in the 
white on cheeks, otherwise there is considerable difference in their 
coloring. Pousargues (1. c.) questions if this species is not one of 
the forms of C. FULIGINOSUS, and decides it is the same as C. PEN- 
NANTI. “Etant donnée d’autre part sa concordance pour ainsi dire 
parfaite des descriptions du C. PENNANTI et du C. BOUVIERI, il me 
parait des lors impossible de reconnaitre et de maintenir une distinction 
quelconque entres ces deux espéces.” In spite of the opinion above 
given there seems to be a sufficient difference in coloration, to keep 
these animals, for the present at least, distinct, until adequate material 
may be obtained to enable a definite decision to be reached. Besides 
the differences mentioned above C. PENNANTI has the upper parts of 
body black while C. Bouviert has these parts reddish brown. 
CoLoBus THOLLONI A. Milne-Edwards. 
Colobus tholloni A. Milne-Edw., Rev. Scien., XIII, 1886, p. 15; 
Pousarg., Ann. Scien. Nat., III, 1896, pp. 150, 167. 
Piliocolobus tholloni Rochebr., Faun. Sénégamb., Suppl. Vert., 
1887, p. 110, pl. V. 
Type locality. Congo. Type in Paris Museum. 
Geogr. Distr. Left bank of the Congo; range unknown. 
Genl. Char. Resembles C. FERRUGINEUS. but back not wholly 
black. 
Color. Forehead with a narrow line of long black hairs extending 
on sides of face to ears; top of head brownish red; nape chestnut 
