EAST AFRICAN MAMMALS IN NATIONAL MUSEUM. 37 
Kenia, at 9,000 feet, 2 (Mearns); Naivasha, near, on Fort Hall trail, 
at 8,500 feet, 1 (Mearns); Nyeri, 1 (Heller). 
Doctor Mearns records the iris as ‘‘light brown.”’ 
The type locality of this form is erroneously given in Elliot’s 
Review of the Primates as ‘‘Kedong Escarpment, east side of Mount 
Kenia;” the Kedong Escarpment is southeast of Lake Naivasha. 
Elliot also writes that the type is in the Berlin Museum whereas it is 
really in the British Museum. The Cercopithecus kolbi hindei of 
Pocock from the Kenia region is unquestionably a synonym of kolbi. 
Dollman’s Cercopithecus kolbi nubilus' from the Nairobi Forest is 
probably identical also,? but I have seen no specimens from the exact 
type locality. Elliot’s misconception regarding the type locality of 
kolbi has made him hopelessly at sea regarding the distribution of the 
forms he recognizes. This monkey is much more closely related to 
Lasiopyga albogularis than one would think from Elliot’s treatment 
of the various forms, and will doubtless eventually be considered 
only a geographic race of that earlier named species. 
Family COLOBIDA. 
Genus COLOBUS Iuliger. 
1811. Colobus ItticerR, Prodr. Syst. Mamm, et Avium, p. 69. (C. polycomus.) 
‘1821. Colobolus Gray, London Med. Repos., vol. 15, p. 298. (pro Colobus.) 
1870. Guereza Gray, Cat. Monk., Lemurs, and Fruit-eat. Bats Brit. Mus., p. 5. * 
(C. guereza Riippell=C. abyssinicus Oken.) 
1887. Tropicolobus RocHesBruNne, Faune Sénégambie, suppl., fasc. 1, p. 96. 
(C. rufomitratus. ) 
The collection contains representatives of two distinct groups, or 
subgenera, of guerezas. Of the black and white group, typical 
Colobus, there are nine forms which apparently belong to three 
separate species. Of the subgenus Tropicolobus, as defined by 
Elliot, only a single specimen of a single form is included in our East 
African collections. 
For measurements of specimens see pages 41—43. 
COLOBUS KIRKII Gray. 
1868. Colobus kirkii Gray, Proc. Zool. Soc. London, p. 180; pl. 15. (Zanzibar 
Island; type in British Museum.) 
* Specimen.—One, from— 
[ZANZIBAR]: 1 (received from E. Gerrard). 
_This specimen was purchased from Edward Gerrard in 1889. For 
a number of years it was on exhibition, but in May, 1916, because of 
the rarity of the species, it was dismounted and made into a study 
1 Ann. and Mag. Nat. Hist., ser. 8, vol. 5, p. 202. 1910. 
2 See Lénnberg, Kungl. Svenska Vet.-Akad. Handl., vol. 48, No. 5, pp. 34-37. 1912. 
3 Colobus kirki on plate. ‘ 
