1846.] the Malayan Peninsula and Islands. 175 



The young of this species, described by Martin, p. 48 1, is from the pecu- 

 liar distribution of the colours, as easily distinguished from the young of 

 5. obscurus, as it is difficult to distinguish the adults of these two species. 

 Both attain to the same size, have in common the shape of the body, 

 the white marks of the face, and the general distribution of colours. In 

 the adult of the present species the prevailing colours are clear ashy- 

 grey above, and white below. On either parietal bone, the hairs form a 

 whorl, and the anterior are directed forward, projecting beyond the eye- 

 brows. The two whorls are distinct in the young, though the hairs of 

 the head are too short to mingle with the long, erect, divergent, black 

 hairs of the eyebrows. Just below the spot where the two whorls come 

 in contact, the skull is naked, thus forming a rather broad, triangular 

 forehead. The general colour of <S. obscurus, both in the young and 

 adult state, is considerably darker. On the upper parts a blackish, 

 or brownish ash colour prevails, lighter below, which acquires in some 

 individuals a whitish appearance, from the white skin of the stomach, 

 which is but scantily covered with hairs. Of parietal whorls there is no 

 trace; the hairs of the head, directed backwards, originate in a peak as 

 far down as the glabella, and are smoothed down on the top of the head 

 from the occipital crest backward. 



Semnopithecus cristatus, Horsfield. 

 Syn. — Simia cristata, Chingkau, Raffles. 



Semnopithecus pruinosus, Desmarest. 



Semnopithecus pruinosus, apud Lesson. 



Semnopithecus cristatus, apud Martin. 



Presbytes cristata, Gray :* List. 



Semnopithecus cristatus, apud Schinz.* 

 Hab. — Pinang, Malayan Peninsula. 



Sumatra, Borneo, Banka. 

 The whitish colour round the eyes and the mouth is present, though 

 less distinct in this than in the preceding two species. 



Semnopithecus femoralis, Horsfield. 

 SYN.-^Semnopithecus chrysomelas, Muller, apud Martin and Schinz. 



* Gray quotes S. maurus, Horsfield, and Schinz 5. femoralis, Martin, as synonyms, 

 both of which are species, in physiognomy, colours, and, as far as S. maurus is con- 

 cerned, in habits distinctly different from the present one. 



