1900.] MAMMALS OF SIAM AND THE MALAY PENINSULA. 313 



Dr. Hanitsch (Bep. Baffles Libr. & Mus. 1898, p. 8) mentions 

 specimens of H. Jar being in the Museum at Singapore from 

 Tanjong Kopang and Kota Tinggi in Johore, and from Kuala 

 Lambilong and Lambatuah in Pahang. 



Distribution. Malay Peninsula, Tenasserim, and perhaps also 

 Pegu and Arakan. 



2. Hylobates agilis P. Cuvier. The Agile Gibbon. 



Cantor (op. cit. p. 3) gives as its habitat "Malayan Peninsula 

 (Malacca, Purh's, Keddah, Pungah), Sumatra : " be also says it 

 appears to be less numerous on the Peninsula than H. lar, and that 

 be has not seen the light-coloured variety. Eidley (Mammals Malay 

 Pen. p. 20) writes it " is common in the Malay Peninsula as far 

 south as Johore, but it is not wild in Singapore." In the Museum 

 at Taiping there are specimens of both the black and light varieties 

 from Larut, Perak. In April 1898, when I was in the Larut Hills, 

 a party of these gibbons were to be seen daily in a group of high 

 trees at about 3200 feet elevation; every morning they commenced 

 calling at 6 a.m. and continued till about 10.30 a.m. They must 

 come down almost to the foot of the hills, as I have frequently 

 beard them in the morning from Taiping. which is but little above 

 the sea-level. 



At Paknam Kabin in Siam, in March 1897, there was a pet 

 gibbon of the variety piJeatus said to have been caught in the 

 neighbourhood. Its colour was buffy white, except the hair on the 

 top of the head, which was black, and on its chest, which was 

 very dark grey. The skin of the face and palms of the hands 

 and feet were black. 



Distribution. Siam, Malay Peninsula, Sumatra. 



3. Hylobates leucogenys Ogilby. The White-cheeked Gibbon. 

 Distribution. Siam (Porbes, ' Handbook Primates,' ii. p. 158). 



4. Hylobates syndactylus (Desm.). The Siamang. 



In the Museum at Taiping there are specimens from Kinta and 

 from Upper Perak. In September 1898, with the kind assistance 

 of Mr. Ridley, I obtained a live Siamang, which had been caught 

 in the Negri Sernbilan, and which was successfully brought home 

 alive to this Society's Gardens. 



Mr. Wray (J. S. B. E. A. S. 1890, no. 21, p. 138) writes of this 

 species: — "A fact which does not seem to be in conformity with the 

 generally received ideas of the habits of the gibbons, is that on 

 both of my ascents of the summit of Gunong Batu Pufeh (in the 

 interior of the Malay Peninsula) I heard the cries of Siamangs at 

 between 6000 and 7000 feet altitude. One would have thought 

 that the climate would be too cold and bleak for such delicate 

 animals, but it appears that they can and do voluntarily stand a 

 considerable degree of cold without any inconvenience." 



Distribution. Malay Peninsula, Sumatra. 



