1907.] 



MOXKEYS OF THE GEXUS CERCOPITHECUS. 



693 



British Museum a younger specimen of the same subspecies, not 

 difiering in any veiy striking chai-acters from the type. 



By common consent C pluto Gray has of late years been 

 regarded as strictly synonymous with C. leucampyx Fischer. The 

 type of C. pluto, however, at least differs from that of C. leiicampyx 

 in having the summit of the liead, the nape of the neck, and the 

 shoulders distinctly speckled -with grey. Hence the brow- band 

 lacks the definition seen in typical C. leucatnpyx and in C leu- 

 ca'nipyx nigrigenis, and approaches the condition obsei'vable in 

 C. I. boutourlinii. 



Subsp. BOUTOURLINII Gigl. (Text-fig. 182.) 



Gercopithecus hoidourlinii Giglioli, Zool. Anz. x. p. 510, 1887 ; 

 P. L. Sclater, P. Z. S. 1893, p. 441 ; Forbes, Monkeys, i. p. 69, 

 1894. 



Text-fia-. 182. 



CercopitJiecus leucanipi/x boutourlinii Giglioli. 

 (From P. L. Sclater, P. Z.S. 1893, p. 442.) 



Gercopithecus alUgularis Gigl. Ann. Mus. Genov. (2) vi. p. 8, 

 1888 (nee Sykes). 



Gercopithecus omensis Thos. P. Z. S. 1900, p. 801. 



