SIMIAD.E. 477 



under surface of the body the hairs are iron-grey ; the hairs of the fore- 

 head diverge over the face ; those on the top of the head are elevated into 

 a long, peaked crest. 



ft. in. 



Length of head and body, nearly 20 



Ditto tail 26 



The Chingkau, when very young, is of a reddish fawn colour, with 

 blackish hands and feet ; when half grown, of a greyish brown, with 

 black hands and feet ; the frontal hairs, at this stage, diverge forward, 

 and the peaked vertical crest is very apparent. Specimens (Nos. 19 a, 

 19b, 19c. 19d, 19e), in the museum of the Zoological Society, London, 

 exhibit the progress of the animal from infancy to maturity. 



Sir T. Stamford Raffles observes, in Linn. Tr. vol. xiii. p. 145 : " A 

 variety of this animal is described, by the natives, to be of a light grey or 

 whitish colour ;" and it is, probably, on the strength of this observation 

 that Baron Cuvier, in his Regne Animal, refers the Simia cristata of 

 Raffles to the Semnopithecus comatus, or Croo, which he would not have 

 done had he been acquainted with the specimens of the Chingkau brought 

 home by that zealous naturalist. Cuvier, also, supposes the S. maurus to 

 be the Tchincou (Chingkau) ; observing, however, in a note, that there is 

 some confusion in the application of these Malay names, the term, Ching- 

 kau, being applied by Raffles to the Simia comata. 



Other naturalists, on the contrary, consider the Simia cristata of 

 Raffles to be identical with the Simia maura of Schreber. An examination 

 of the specimens of the S. cristata, presented by Sir T. S. Raffles to the 

 Zoological Society, London, will afford evidence of its distinctness. It 

 differs from S. maurus, not only in colour, but in being a much more 

 slender animal ; in having the ears large, and exposed ; and in the 

 presence of a long, peaked, vertical crest. Desmarest, who must have 

 been aware of Sir T. S. Raffles's name and account (since, in the descrip- 

 tion of the Cimepaye, Suppl. p. 533, he quotes this writer), failed to 

 recognise, in the characters of the S. cristata, so clearly detailed (Linn. 

 Tr. xiii.), the animal to which he applied the specific term, pruinosus, 

 and with which it is identical. As to the priority of the two names, it is 

 evident, from the reference made by Desmarest to Sir T. S. Raffles's 

 paper, that the term, cristata, was applied to the species in question, before 

 that of pruinosus. 



GENERAL HISTORY. The Crested Monkey, or Chingkau, inhabits the 

 forests covering the flat districts of Sumatra ; and, as it appears from 

 Miiller, also of Borneo : it is active and graceful ; but nothing more is 

 known respecting it. 



