HTLOBATES. 9 



says that it ranges as far north as the northern limit of Pegu, but 

 not west of the dividing range between Pegu and Arakan ; whilst 

 Anderson states that it is found both in Arakan and Lower Pegu. 

 I doubt the occurrence of this species in the latter countries, and 

 I can find no satisfactory evidence of its existence in the Irawady 

 or Sittoung valleys, although it very probably inhabits the hills 

 east of the Sittoung. Further information as to the range of H. 

 lar and H. lioolack in Burma is desirable. 



Habits. The white-handed Gibbon is said by Tickell, who ob- 

 served both species in their native forests as well as in captivity, 

 not to be nearly so light and active as the Hoolock, and to walk 

 less readily. The voice, too, is quite distinct, according to the 

 same observer, in the two species. The cry of H. lar has been 

 rendered in musical notation by Tickell, who has given, in the 

 paper quoted above, an admirable account of the animal's habits. 

 It is usually found in parties of from 6 to 20, composed of indi- 

 viduals of all ages. 



The present species is said to drink by scooping up water in its 

 hand, and not as the Hoolock does. So entirely does it depend on 

 its hands for locomotion amongst trees, that it carries anything in 

 its feet. Tickell, from whom I take these details, says that he has 

 seen a party of H. lar escape thus with their plunder from a Karen 

 garden in the forest. 



In all other respects the habits of this species, so far as they are 

 known, resemble those of H. hoolock. The young, almost always 

 one in number, twins being as rare as amongst human beings, 

 are born in the early part of the cold season, and each sticks to the 

 body of its mother for about seven months, after which it begins 

 gradually to shift for itself. 



According to Heifer (J. A. S. B. vii, p. 858), the Siamang (Hylo- 

 bates syndactylus) is found in Southern Tenasserim ; but several of 

 Heifer's identifications were incorrect, and as no one has since 

 heard of the animal in the Tenasserim provinces, I agree with 

 Blyth in believing that Heifer must have been mistaken. The 

 Siamang is larger than the other species of Gibbon, standing about 

 3 feet 2 inches in height, and is perfectly black in colour through- 

 out. It is doubtful if the Siamang occurs elsewhere than in 

 Sumatra, though "Wallace states that it is found in the Malay 

 Peninsula, where the only species, except H. lar, noted by Cantor 

 (J. A. S. B. xv, p. 173) is H. ayilis. In Siam H. leucoyenys 

 (figured P. Z. S. 1877, pi. Ixx) is said to occur. 



At the same time there appears to be a large, not yet identified, 

 Ape in the mountains of Tenasserim, but whether it belongs to the 

 anthropoid Apes, or is a large tailless or nearly tailless Macacus, it 

 is impossible to say. The only observers who have seen this 

 animal, so far as I am aware, are Mr. W. Davison and Captain C. 

 F. Bingham. The former writes to me that when collecting birds 

 for Mr. Hume, on Muleyit, a mountain about 7000 feet high, east 

 of Moulmain, he came suddenly on a number of Monkeys feeding 

 on the ground in a very dense part of the forest. He had a good 



