256 MR. p. li. SCLATEE ON THE [Mar. 14, 



who in 1883 was sent out to French Congo on a special mission 

 to explore the Natural Products of the new French territory 

 between Gaboon and the river Congo. 



Appendix. — Index specierum miJii nonduni ohviarum* 



1. CeECOPITHECUS BOTJTOtrELINI. 



CercopitJiecus houtourlinii, Giglioli, Zool. Anz. x. p. 510 (1887). 



Cercopithecus alhirjularis, Giglioli, Ann. Mus. Civ. Gen. ser. 2, 

 vi. p. 8 (1888). 



Hah. Central Africa. 



This species was based on a specimen transmitted to the Florence 

 Museum from Kaffa, N.E. Afi-ica, by Dr. Traversi. It has been 

 subsequently united to C. alhogiilaris. 



2. Cercopithecus platidits. 



CercopitJiecus Jlavidus, Peters, Eeise n. Moss., Saug. p. 3, t, i. b. 



Hal. Mozambique. 



" Alli ed to C. rufo-viridis and C, albogularisJ" — Peters. 



3. Cercopithecus grati. 



CercojntJiecus graiji, Fraser, Cat. Knowsl. Coll. p. 8 (1850); 

 Gray, P. Z. S. 1868, p. 182 ; id. Cat. Monk. B. M. p. 22 (1870). 



Hah. West Africa {Knowsley Coll.). 



This is said to be very closely alUed to C. mona, but to differ in 

 having a yellowish-white spot over each eye, and a black stripe on 

 each side of the head from eye to ear ; up the centre of the 

 forehead runs a darkish stripe, each hair being anuulated with 

 black and greenish yellow. There are no white spots on the 

 crupper. 



4. Cercopithecus labiatus. 



Cercopitliems labiatus, Geoffr. Compt. Bend. Acad. Sci. xv. 

 p. 1038 (1842) ; id. Diet. univ. d'Hist. nat. iii. p. 302 ; id. Archiv. 

 du Mus. ii. p. 555. 



Hah. West Africa? 



Sometimes considered to be the same as C. samango. Based on 

 a single menagerie specunen. 



5. Cercopithecus monoides. 



CercopitJiecus monoides, Geoffr. C. R. xv. p. 1038 (1842; descr. 



* Tlie following species is no doubt a Cercocebzis, allied to C. albigena : — 



Cercopithecus aterrimus. 



Cercopithecus aterrimus, Oudemans, Zool. Gart. xxxi. p. 267 (1890). 



Hob, Central Africa : Stanley Falls on the Congo. 



