COLO BUS 121 



also in Gaboon ; and lastly in Angola, and thence eastward to the Valley 

 of the Pangani in German East Africa, C. angolensis has its range. 

 Of the recognized species, the habitat of C. temmincki is quite un- 

 known, but if in the future it should be proved to be the same as C. 

 FULIGINOSUS, Senegambia is the country in which it must be sought. 



KEY TO THE SPECIES. 



A. Upper parts and legs not black. 



a. Head partially crested. 



a.' Median reddish olive crest tipped with black. . . .C. verus. 



b. Hairs on forehead directed forward. 

 a.' Tufts over ears. 



a." Black line between tufts, outside of 



limbs dark brown C. rufomitratus. 



b." No black line between tufts. 



a!" Outer side of limbs pale brownish 



gray C. tephrosceles. 



b.'" Outer side of limbs red C. nigrimanus. 



c!" Outer side of limbs Prout's brown . . . C. ellioti. 

 b.' No tufts over ears. 



a." Side of head and jaws red, tail at base 



dark brick red C. preussi. 



b." Side of head and jaws white. 



a.'" Shoulders and arms black C. kirki. 



b.'" Shoulders and arms red C. bouvieri. 



c." Sides of head and jaws yellowish red . . .C. tholloni. 

 d." Sides of head and jaws orange red . . .C. temmincki. 

 c." Sides of head and jaws black . .Spec, from 



Avakubi, W. of L. Albert, 

 f." Sides of head yellowish white and red, 



between lower jaws red C. foai. 



g." Sides of head ferruginous C. graueri. 



h." Sides of head fuscous C. oustaleti. 



B. Upper parts black, legs not black. 



a. Legs bright bay C. ferrugineus. 



b. Legs tawny C. fuliginosus. 



c. Legs dark ferruginous C. rufoniger. 



d. Legs bright russet red C. pennatiti. 



e. Legs ? C. godonorum. 



