266 CERCOCEBUS 



CRESTED MANCABEY. 



Type locality. Miatola, mouth of the Osi and Tana rivers, East 

 Africa. Type in Berlin Museum. 



Geogr. Distr. East Africa ; Tana and Osi rivers. 



Genl. Char. Hairs of head very long covering the ears, radiating 

 from a point near frontal ridge ; no F-shaped partition as shown in 

 Peters' figure ; general color pale brown ; tail long ; hairs on forehead 

 projecting forward. 



Color. Hairs on top of head long, falling over ears, blackish 

 brown ; upper parts and sides of body, arms to elbows and legs dark 

 hair brown, the hairs light gray at base and banded with black and 

 buff; sides of head brownish yellow, sides of neck, throat, under 

 parts and inner side of limbs yellowish white tinged with brown ; fore- 

 arms blackish brown speckled with buflf; hands and feet blackish 

 brown. Ex type Berlin Museum. 



Measurements. Total length, 1,350; tail, 730. Ex mounted 

 specimen, type Berlin Museum. Skull: total length, 121.5; occipito- 

 nasal length, 103 ; Hensel, 85 ; intertemporal width, 46 ; zygomatic 

 width, 84; median length of nasals, 20: length of upper molar series, 

 30.5; length of mandible, 90; length of lower molar series, 39. Ex 

 type Berlin Museum. 



Subgenus Lophocebus. 



Head crested; hair long; zygomatic arch (jugal), below alveolar 

 border of molars. 



Ceecocebus albigena (Gray). 



Presbytis albigena Gray, Proc. Zool. Soc. Lond., 1850, p. 77, pi. 

 XVI ; Murie, Proc. Zool. Soc. Lond., 1865, p. 740. 



Cercoccbus albigena Puch., Rev. Zool., 1857, p. 241 ; Sclat., Proc. 

 Zool. Soc. Lond., 1868, p. 183; 1896, p. 784; Schleg., Mus. 

 Pays-Bas, Simias, 1876, p. 97 ; Jent., Cat. Syst. Mamm., 1892, 

 p. 26; Id. Proc. Zool. Soc. Lond., 1895, p. 338; Forbes, 

 Handb. Primates, II, 1894, p. 40; Matschie, Saugth. Deutsch. 

 Ost Afr., 1895, p. 6; Pousarg., Ann. Scien. Nat., Ill, 1896, 

 p. 228; Pocock, Ann. Mag. Nat. Hist, XVIII, 7th Ser.. 1906, 

 p. 283. 



Cercocebus {Semnocebus) albigena Gray, Cat. Monkeys, Lemurs 

 and Fruit-eating Bats, Brit. Mus., 1870, p. 27. 



CRAY-CHEEKED MANCABEY. 



Type locality. Congo Free State, West Africa. "Stanley Falls ?" 



