6o LLOYD S NATURAL HISTORY. 



Gardens in London. It is very active and intelligent, and 

 when young it is gentle and of a good disposition, but as it 

 grows older it becomes treacherous, malicious, and savage. 



XVIL THE VERVET GUENON. CERCOPITHECUS PYGERYTHRUS. 



Cercopithecus pygerythra (Le Vervet), F. Cuvier, Hist. Nat. 

 Mamm., iii., livr. xxiv. (Janvier, 182 1). 



Cercopithecus pygerithrceus^ Desmarest, Mamm., Suppl., p. 534 

 (1820). 



Cercopithecus pygerythrus, Lesson, Spec, des Mamm. Bimanes 

 et Quadrum., p. 83 (1840); Geofifr., Diet. Hist. Nat., iii., 

 p. 305 (1849); id.. Cat. Meth. Primates, p. 21 (1851); 

 Wagner, in Schreb. Saugeth., v., p. 39 (1855); Peters, 

 Reis. Mossamb. Saugeth., p. 4 ; Martin, Mammif. An., p. 

 521 (1841); Schl., Mus. Pays Bas, vii., p. 76 (1876); 

 Thomas, P. Z. S., 1885, p. 219; H. H. Johnston, Kili- 

 manjaro Exped., p. 352 (1886) ; Scl., P. Z. S., 1893, p. 249 

 (nee Martin, nee. Schl.). 



Cercopithecus picsillus^ Delalande in Desmoul, Diet. Class., vii., 

 p. 568. 



Cercopithecus lalandii, Geoffr., Diet. d'Hist. Nat., iii., p. 305 

 (1849); Wagner, in Schreber's Saugeth., v., p. 39 (1855) ; 

 Sclater, P. Z. S., 1893, pp. 248 and 615. 



Cercopithecus rufo-viridis, Is. Geoffr., C. R., xv., p. 1038 (1842); 

 Scl., P.Z. S., i860, p. 420. 



Chlorocebus pygerythruSj Gray, Cat. Monkeys Brit. Mus, p. 25 

 (1870). 

 Characters. — Very nearly allied to the Grivet {C. sabceus), 



to the Malbrouck (C cynosurus), and to the last species, 



the Green Guenon. Distinguished from the Grivet by the 



chin, the hands and the feet, beyond the ankle, and the wrist 



being very black, instead of grey ; and the tip of the tail (or its 



