11. MIOPrXHECUS. 19 



Var. 3. Pennantii. Like var. 2, but feet and tail blacker ; no red on 

 the nape. 



Colobiis Peuuautii, Waterhoiise, P. Z. S. 1838, p. 57 ! Martin, Qicad. i. 

 p. 501 ! 



Hah. West Africa : Gambia, Rendall. 



These species were described from flat furriers' skins ; but the large 

 series of skins and more perfect specimens show that they are only- 

 varieties, in intensity of colour, of the same species — the Bay 

 Monkey of Pennant. The thumb varies in development ; sometimes 

 it has a claw. 



6. Colobus cristatus. B. M. 



Fiu" short, yellow brown ; front part of body, shoulders, and 



outside of the fore legs greyer ; throat, chest, belly, inside of limbs 



and feet greyish wliite. Hair of crown short, reflexed, with two 



streaks in front, and with a narrow, erect, longitudinal crest behind. 



Colobus cristatus, Gray, Ann. 8f Mag. N. H. 1866 ! 



Hab. West Africa. 



See Colobus verus, Van Beneden, Bull. Acad. Brux. v. p. 311, 

 1838. Head, neck, back, and base of the tail olive-brown, 

 hairs aU finely ringed with black ; nape, and above and below 

 the callosities, dark brown ; tail long, grey, darker at the tip. 

 Body and limbs strong ; index finger six or eight lines shorter 

 than the middle one. Hab. Africa. Mus. Paris. 



10. GUEREZA. 



Nostrils rather wide apart. Back with a line of long pendulous 

 hair, forming a kind of mantle. Thumb rudimentary. Tail-end 

 tufted. Hab. Africa. 



Guereza Ruppellii. The Guereza. B. M. 



Black ; end of tail, hair round the face, and of the mantle white. 



Colobus guereza, Rilppell, Fauna Abyss. 1. 1 ! 

 Hab. Abyssinia, Rilppell ; West Africa, Thompson. 



Tribe IV. CERCOPITHECINA. 



Head round or oblong. Nostrils on the slope of the face, separated 

 by a narrow septum. Hands and feet short, broad. Thumb large. 

 Stomach simple. Hab. Africa. 



A. Head rounded. Face short. Last loxcer grinder tcith three or four 

 tubercles. 



11. MIOPITHECUS. 



Head globular. Whiskers straight, rather rigid, bent downwards. 

 Body and limbs slender. Hands long ; fingers united at the base ; 



c2 



