CERCOCEBUS 265 



Measurements. Total length, 660.40; tail, 628.65; foot, 127. 

 Skull: total length, 117; occipito-nasal length, 104; Hensel, 78; zygo- 

 matic width, 74 ; intertemporal width, 46 ; breadth of braincase, 63 ; 

 palatal length, 47; median length of nasals, 21 ; length of upper molar 

 series, 31 ; length of mandible, 80 ; length of lower molar series, 38. 



Cercocebus hagenbecki Lydekker. 



Cercocebus hagenbecki Lydekk., Novitat. Zool., VII, 1900, p. 594, 

 desc. ; VIII, 1901, pi. I, fig. 1 ; Pocock, Ann. Mag. Nat. Hist., 

 XVIII, 7th Ser., 1906, p. 281. 



HAGENBECK'S MANGABEY. 



Type locality. "Upper Congo," locality unknown. Type in Tring 

 Museum. 



Genl. Char. Upper eyelids dark in young; sometimes pale or 

 flesh color ; thumb short ; face black ; callosities reddish ; hairs on head 

 radiating from central point, those directed forward forming a post 

 superciliary fringe. 



Color. Upper parts light slaty gray ; on the head, back, outer 

 side of limbs, and the upper surface of tail, some hairs are ringed 

 black and tawny ; inner side of limbs pale grayish white, some hairs 

 tipped with bright yellow ; tail at base black, rest of upper part slate 

 gray, beneath paler; hands black. Ex adult British Museum. 



Measurements. Total length, 72)7; tail, 407; foot, 123; ear, 32.5. 

 Skull: total length, 135, (110.8); occipito-nasal length, 115, (97.6); 

 Hensel, 94, (70) ; zygomatic width, 85, (67.7) ; palatal length, 58, 

 (41.8) ; intertemporal width, 51, (49.9) ; median length of nasals, 30, 

 (10) ; length of upper molar series, 35, (32.3) ; length of mandible, 88, 

 (73) ; length of lower molar series, 42, (36). The figures in paren- 

 theses are the measurements of the type. 



The type is a young animal, the molars not having assumed their 

 positions in the jaws. The measurements of the skull as will be seen, 

 are considerably exceeded in the adult, of which there are two speci- 

 mens in the British Museum. They differ from the young in color, in 

 having the head and back more tawny, the yellow markings of the 

 young having changed to tawny. In other respects they are alike, with 

 no yellow beneath. 



Cekcocebus gaxeritus Peters. 



Cercocebus galeritus Peters, Monatsb. K. Preuss. Akad. Wiss., 

 Berlin, 1879, p. 830, pis. IB, III ; Forbes, Handb. Primates, 

 II, 1895, p. 41 : Pocock, Ann. Mag. Nat. Hist., XVIII, 7th 

 Ser., 1906, p. 283. 



