182 DR. J. E. GRAY ON A NEW COLOUUS. [Feb. 27, 



7. CoLOBUs CRISTATUS, Gray. 



Crown of the head with short reflexed hair, with two whorls in 

 front, and alow, narrow, central, erect, longitudinal crest. Yellowish 

 brown ; front part of the body, shoulders, and outside of the fore 

 legs greyer ; throat, chest, belly, inner side of the Hnibs, and feet 

 greyish white. 



West Africa. B.M. 



8. CoLOBUS VEEUS, Van Beneden. 



Crown of the head with short reflexed even hair ; chest with 

 elongated spreading hair. Olive-brown ; hair finely ringed with 

 black ; whiskers whitish ; chin and beneath pale greyish. 



Mus, Paris. 



Van Beneden's figure and short description seem to indicate that 

 this species is very like the preceding, but that the head shows no 

 indication of a crest or whorl of hair on the forehead. 



9. CoLOBUS GUEREZA, Ruppcll. 



Crown-hair short ; back with a line of long produced hair forming 

 a kind of mantle ; end of tail tufted. Black ; end ,of tail, circum- 

 ference of face, and mantle white. 



Abyssinia. B.M. 



Along with the Colobus there was sent the skin, with the skull 

 and bones of the limbs, of a young specimen of Cercopithecus albo- 

 ffularis, Sykes. It differs from C. samango by being grizzled and 

 yellow-brown-washed, and the base of the tail grizzled and the hinder 

 half pure black. This is also probably from Zanzibar. 



The Cercopitheci in the British Museum may be thus divided : — 



a. Nose blue, whiskers yellow. 1. C. cephus,^.^!. 



b. Nose covered with white hairs. 2. C. petaurista, Erxl., B.M. 



3. C. melanogenys. Gray, B.M. 4. C. martinii, Waterh., 

 B.M. 5. C. nictitans, Erxl., B.M, 6. C. ludio. Gray, B.M. 

 e. Nose and ears covered with red hairs. 7. C. eryth-otis, Wa- 

 terh., B.M. 

 (I. Nose coloured like the body. 



* Haunches with a white streak. 8. C. diana, Erxl., B.M. 

 9. C leucampyx, Martin, B.M. 

 ** Haunches with a white spot. 10. C. mona, Erxl., B.M. 

 11 . C grayii, Eraser. 

 *** Haunches without streak or spot. 



t Head with a black temple-streak. 12. C.pogonias, 

 Bennett, B.M. 13. C. erxlebenii, Dahlbom, B.M. 

 Var. nigripes, Du Chaillu, B.M. 14. C. pluto, Gray, 

 B.M. 15. C. erythrogaster. Gray, B.M. 

 ft Head without any black streak. 16. C. campbellii, 

 Waterh., B.M. {C. burnettii, Gray). 17. C. albo- 

 gularis, Sykes, B.M. 18. C. saimango, Sundevall, 

 B.M. 



