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. "£tant donnee 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 especes." 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. bouvieri 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., Ill, 1896, pp. 150, 167. 

 Piliocolobus tholloni Rochebr., Faun. Senegamb., Suppl. Vert., 



1887, p. 110. pi. 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 



