58 



XV. Werner's guenon. cercopithecus wernert. 



Cercopithecus wertieri^ Geofifr., C. R., xxxi., p. 874 (1850) ; id., 

 Arch. Mus., v., p. 539, pi. xxvii. (1851); Wagner, in 

 Schreb. Saugeth. Suppl, v., p. 42 (1855); Sclater, P. Z. S., 

 1893, p. 258. 



Characters. — Nearly related to C. sabceus, but all the parts 

 are olive-green where that species is greyish-green — the hairs 

 being ringed with reddish-fawn and black ; the former taking 

 the place of the green rings in the hairs of the C. sabcEus^ 

 and the black ones being much broader ; the face black ; the 

 tail yellow at the tip as in C. sabcEus. 



Distribution. — The exact habitat of this species is unknown. 

 XVI. the green guenon. cercopithecus callitrichus. 



{Plate XXVIJI.) 

 Singe Verte, Adanson, Voy. Seneg., p. 178 (1735). 

 Cercopithecus sabcea (nee Linn.), Erxleb., Syst. Regne An., p. 



33 (1777). 

 Cercopithecus sabceuSy Wagner in Schreb. Saugeth., v., p. 40 



(1855); Martin, Mammif. An., p. 519 (1841). 

 Le Callitriche, F. Cuv., Hist. Nat., Mamm., i., livr. iv. (Mars, 



1819). 

 Sijttia sabcea^ Audebert, Singes, Fam. iv., Sect., ii., p. 7, fig. 



iv. (1797)- 

 Cei'copithecus callitrichus^ Is. Geoffr., Cat. Meth. Primates, p. 23 



(1851); Schleg, Mus. Pays-Bas, vii., p. 73 {1876); 



Sclater, P. Z. S., 1866, p. 79 ; 1893, pp. 248, 616. 

 Chlorocebus sabceus^ Gray, Cat. Monkeys Brit. Mus., p. 25 



(1870). 



Characters. — Muzzle rather long ; ears large, naked, and 

 somewhat pointed behind ; hairs on the side of the head long, 



