38 CERCOPITHECIDJ5. 



the end 28-5, with the tuft 31 (Blyth). According to Anderson 

 the skull is of about the same size as that of S. priamus, but the 

 supraorbital ridge is less developed. 



Distribution. Throughout Assam and the mils to the south of the 

 valley, Sylhet, Tipperah, Chittagong, Northern Arakan, and part 

 of Upper Burma. Neither this nor any other species appears yet 

 to have been recorded from the Himalayas north of Assam. 

 Anderson gives Tenasseriin also as a locality, but this is due to 

 his uniting S. chrysogaster with this species. 



Habits. Nothing is known of the habits of this species in parti- 

 cular, though it doubtless resembles its allies in most respects. In 

 captivity it is said to be gentle when young; but older animals, 

 especially males, are sometimes savage. 



21. Semnopithecus chrysogaster. The red-bellied Monkey. 



Semnopithecus potenziani, Bonaparte, Comptes Rendus, xliii, p. 412, 



note (1856), description insufficient. 

 Semnopithecus chrysogaster, Licht., Peters, P. Z. S. 1866, p. 429, 



footnote ; id. MS. Akad. Berlin, 1879, p. 830, footnote, pi. iv b 



(no description, but a good figure). 

 Presbytes chrysogaster, Blyth, Mam. Birds Burma, p. 10. 



In the only specimen known there is a slight compressed crest 

 extending from. the vertex to the nape, but there is some doubt as 

 to whether this crest is natural ; probably it is. No distinct 

 whisker-tufts. Chin thinly covered with short white hairs and a 

 few on the upper lip. Fur of body rather long. 



Colour. Upper parts, limbs, and tail jet-black, the basal half of 

 the dorsal hairs ferruginous, the extreme base white ; the frontal 

 band, the cheeks to behind the ears, sides and front of neck, with 

 chin and upper breast, white ; rest of lower parts deep and bright 

 ferruginous, which tinges the inner side of the limbs. 



Young wholly rufous white or pale isabelline. 



Dimensions of stuffed adult specimen (a female) : head and body 

 20 inches long, tail 23. 



Two specimens, an adult female and a young one, are preserved 

 in the Berlin Museum. According to Blyth, these were obtained 

 by Heifer in Tenasserim. Peters says nothing of Heifer, nor 

 could I learn anything in Berlin of the original collector of the 

 specimens, although on the stand, besides the locality, is the name 

 Prof. Strempel. The circumstance that so beautifully coloured 

 and conspicuous a species has not been noticed again tends to raise 

 some doubt as to the species really occurring in Tenasserim. At 

 the same time, Sciurus piceus, said by Peters (P. Z. S. 1866, 

 p. 429, note) to have been received with Semnopithecus chryso- 

 gaster, appears to be identical with a variety of Sciurus erythrceus 

 that occurs in Cachar. 



