HYLOBATES 175 



The type is exactly like specimens of H. concolor except that the 

 white band on the forehead is narrower ; otherwise there is no diflfer- 

 ence to be seen. Until more specimens from the Sulu group of islands 

 are obtained, it is perhaps best to leave it as a race of H. concolor. 



Hylobates fuscus Winslow-Lewis. 



Hylobates fuscus Lewis, Journ. Nat. Hist. Soc. Boston, I, Pt. I, 

 1837, p. 32, pis. I, II; Anders., Zool. Res. Exped. Yunnan, 

 1878, p. 11. 



LEWIS'S GIBBON. 



Type locality. "Vicinity of the Himalay Mountains." 



Geogr. Distr. Unknown. 



Gent. Char. "Upper canines reaching nearly to the mental 

 foramina, the lower canines projecting upwards as far as the alveolar 

 process of the lower jaw." 



Color. "Dirty brown ; face and hands black." 



The habitat of this Gibbon is extremely uncertain. A male and 

 female were purchased in Calcutta from the menagerie of a Rajah, 

 who stated that he had obtained them from the "vicinity of the 

 Himalay Mountains," a locality that might mean anywhere. The very 

 brief description given is that contained in quotation marks. Anderson 

 describes the canines as stated above, but does not say where he saw 

 the cranium, and I have no information as to the present location 

 of the .specimens. It is extremely doubtful if the examples have any 

 claim to a distinct rank. 



