128 APPENDIX. 
arms and thighs greyish white; a few bristly hairs on the eyebrows 
black. 
Colobus Kirkii, Gray, P. Z, S. 1868, p. 180! 
Hab. Zanzibar. 
See Colobus palliatus, Peters, Monatsber. Ak. Wiss. Berlin, 1868, 
p. 637; Gray, Ann. & Mag. Nat. Hist. 1869, iii. p. 171. 
Hab. Eastern Africa; Mus. Berlin. 
Page 19. Colobus cristatus. Add :— BM. 
Gray, P. Z. 8. 1868, p. 182, t. 15, hinder figure. 
Colobus verus is, I believe, the same as cristatus; but the crest was 
not observed by the describer. 
Page 20. CERCOPITHECUS. 
Synoptical list ‘of species, Gray, P. Z. 8. 1868, p. 182. 
Page 23. Add:—11**. Cercopithecus erythrogaster. B.M. 
Fur blackish, minutely punctulated with yellow ; crown yellowish ; 
hand and wrist blackish ; outside of hind legs and thighs grey, punc- 
tulated with blackish ; face, moustache, frontal and temporal band 
black ; spot on cheek pale yellow ; whiskers, beard, throat, and side 
of neck white ; front of thighs and under surface of the tail greyish 
white; chest and belly red-brown. 
Cercopithecus erythrogaster, Gray, P. Z. 8. 1866, p. 169, t. xvi.; 
Murie, P. Z. 8, 1866, p. 380. 
Hab. West Africa. 
Page 24. 15. Cercopithecus samango. Add B.M. 
Page 27. Cercocebus albigena. Add B.M. 
Page 30. Add:—5a. Macacus problematicus. B.M. 
Forehead and crown with erect hair, rather directed forward in 
front, with a whorl of radiating hair on the back of the forehead. 
Fur thick, abundant, rather long, pale reddish brown; of the chin, 
throat, underside of the body, inner side of the limbs, greyish white. 
Tail slender, covered with close-set hair, not so long as the body 
(imperfect ?). 
Assam Monkey, Bartlett, Land §& Water, 1869! 
Hab. Assam, Bartlett. 
Page 31. Add:—9a. Macacus cyclopis! B.M. 
Hab. Formosa. 
Peculiar for the length of the fur, which is expanded on the base 
