1907.] 



MONKEYS OF THE GENUS CERCOPITHECUS. 



709 



By Sclater and Forbes the two species C. viona and C. camphelli 

 were placed in a group containing C. albogulafis, C. leucampi/x, and 

 the I'est of the black-armed species without a nose-spot. Neither 

 of these authors appeal's to have detected either the close similaiity 

 between these two species, or the obvious affinity they exhibit 

 towards G. luolji, C. pogonias, and C. grayi ; and in spite of 

 Pousargues's remarks upon this point (Ann. Sci. Nat. (8) iii. 

 p. 215,"l896), Trouessart (Cat. Mamm. Suppl. pp. 13, 14, 1904) 

 adheres to the views implicitly expressed by the earlier writers. 



Cercopithecus mona Schreb. (Text-fig. 184.) 



Simla mona Schreber, Saug. i. p. 97, pi. xv., 1774. 



Cercopithecus mona Erxleben, and of subsequent authors. 



Brow-band whitish, l>roadei' laterally than mesially, l3ut not 

 extending to the ear. Head and nape speckled yellowish green ; 

 whiskers greyish, apically annulated with yellow and black. Ear- 

 tufts long, thick, of the same colour as the hairs of the nape. 



Text-fii?. 184. 



Cercopithecus mona Schreber. 

 (From a specimen living in the Society's Gardens.) 



Back, shoulders, and sides of body speckled, rusty red ; lumbo- 

 sacral area darker, sometimes almost black. Arms black externally : 

 legs blackish, sparsely and weakly speckled externally ; hands 

 and feet black. An elongate patch of snow-white hair extending 

 forwards from the ischial callosity on to the hip. Tail nearly 

 black, greyish on under side in proximal half. Chin, throat, 

 chest, belly, inside of arms and legs white. 



Log. Nigeria and Cameroons. The Bi'itish Museum has 

 examples of this species from Jebba on the Niger {G. F. Abadie, 

 0.3.29.2) ; Bakana, Southern Nigeria (IF. J. Ansorge, 2.11.2.2-3.). 



