64 LLOYDS NATURAL HISTORY. 



of the tail, and inner side of the limbs, with the entire hands 

 and feet, grey or greyish-white, — the hairs being ringed with 

 black and white. The nude parts of the face and of the ears, 

 hands, and feet, violet flesh-colour; a distinct superciliary arch 

 black ; a white bar from the eye to behind the ear ; a black line 

 from the superciliary stripe, extending down the nose-ridge and 

 expanding on the tip ; on the upper lip, a short moustache of 

 black hairs ; whiskers greyish-white, washed with yellow. This 

 species varies considerably in size and in coloration. 



In young animals the grey is often washed with rufous. 



Distribution. — West Africa : Senegal. 



Habits. — The Patas in its native forest lives in large troops, 

 which unite together, as De la Brue has recorded, against a 

 common enemy. He relates that as he passed along a river 

 in his boat, the Patas came down to the tips of the branches 

 out of curiosity, but after watching the party for a time they 

 threw dry branches and other handy objects at them, till some 

 of their number were at last shot. This so infuriated the sur- 

 vivors, that they redoubled their attack with stones and other 

 missiles, giving utterance meanwhile to the most frightful cries. 

 Mr. Martin, from whom we have condensed De la Brue's ac- 

 count, says that this species is lively in captivity, but very 

 spiteful and capricious, its temper becoming worse with age. 



XX. THE NISNAS GUENON. CERCOPITHECUS PYRRHONOTUS. 



Cercopithecus pyrrhojtotiis^ Hempr. et Ehrenb., Symb. Phys., 

 pi. X. (1838) ; Geoffr., Diet. Hist. Nat., iii., p. 307 (1849) ; 

 Wagner, in Schreber's Saugeth., v., p. 42 (1855) ; Sclater, 

 P.Z. S., i87i,p. 623: 1893, p. 250; Schl., Mus. Pays-Bas, 

 vii.,p. 84 (1876). 



