120 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 40. 



larger than those in the Bornean marten, the females. The differ- 

 ence in size is about the same as that usually found between the 

 two sexes in the Mustelidae. 



(For measurements see table below.) 



Measurements of specimens of Mustela henricii. 



1 Collector's measurements. 



2 Collector's measurements in pounds and quarters computed to kilograms. 



HELARCTOS EURYSPILUS Horsfield. 



1826. Uelarctos euryspilus Horsfield, Zool. Journ., vol. 2, pp. 221-234, pi. 7. 

 1907. Ilelarcios euryspilus, Lyon, Proc. U. S. Nat. Mus., vol. 33, p. 561, Decem- 

 ber 24, 1907. 



Since 1905 Doctor Abbott secured seven additional specimens of 

 the Bornean sun bear, six skulls obtained from natives in south- 

 western Borneo, and a skin and skull collected at Pamukang Bay. 

 The present series of skulls shows that the differences between the 

 Bornean and Sumatran sun bears are not as great as I was led to 

 believe in 1907, but the differences pointed out then, hold in the 

 main, as may be seen on reference to the table of measurements on 

 page 121. There is no doubt as to the distinctness of the two forms. 

 The Sumatran specimens have smaller collars and the light area of 

 the nose is more conspicuous than in the single Bornean skin. 



Bears seem to be pretty common wherever there is a plantation of cocoanuts. Some 

 of the trees are said to be dead or dying as a result of their depredations. The bears 

 climb up and eat the "heart" out of the palm. In a email grove of about ninety 

 trees, near Tanjong Pamukang, the bears had destroyed about half the trees. It 

 was full moon during my stay there, so the owners said it was no use to watch for 

 bears, as they only came out on dark nights. The Dutch authorities took away all 

 the guns about a year ago, so now the animals have it all their own way. — W. L. A. 



