228 MR. O. THOMAS ON THE [Apt. 16, 



Sibil tu I., Oriolus chinensis and Sea-cops calvus, the latter at least 

 is purely Philippine, I cannot help thinking that a more extended 

 knowledge of its avifauna would probably show a preponderance of 

 western rather than eastern species. " 



In concluding this sketch of the grounds upon which I am induced 

 to consider Palawan and the other islands above mentioned as com- 

 ponent parts, from a zoo-geographical point of view, of the Bornean 

 group, I may mention that I hope to be able to obtain a small 

 collection from the mountains of Palawan before long, and also one 

 from Sibutu. 



2. On the Mammals of Mount Kina Balu, North Borneo. 

 By Oldmeld Thomas, Natural History Museum. 



[Received April 2, 1889.] 



(Plate XXIV.) 



The Mammals described in the present paper formed part of the 

 large zoological collections made during 1887 and 1888 on the great 

 mountain Kina Balu in North Borneo by Mr. John Whitehead, 

 a gentleman who, although primarily an ornithologist, yet wisely 

 collected whatever Mammals he was able to obtain in that most 

 interesting and as yet unknown part of the island. 



The species of which specimens were obtained number 21. Of 

 these 6 were new to science, and 5 more were new to Borneo, thus in- 

 creasing the known Mammal fauna of the island by no less than 11. 

 The large number of new species is a most remarkable fact, and one 

 that shows how far we still are from anything like a complete 

 knowledge of the smaller Mammalia and their distribution ; and this 

 is especially the case with the Rodents, to which, as usual in such 

 cases, the majority of the new forms belong. 



Until more is known of the mammals inhabiting the other 

 mountains of Borneo, it is not possible to draw any general geo- 

 graphical deductions from the present collection ; but it may be noted 

 that, of the additions to the Bornean fauna, one species was pre- 

 viously only known from the Himalayan region, where also is found 

 the nearest ally of one of the new species, two are Sumatran, oiie is 

 Javan, and one occurs in Celebes. 



1. Semnopithecus hosei, Thos. P. Z. S. 1889, p. 159, pi. xvi. 



a. Skull, 4000 feet. 



The only other locality known for this species is Baram, on the 

 coast at the junction of Brunei and Sarawak, where the type specimen 

 was obtained by Mr. Charles Hose. The present skull is that 

 mentioned in the original description {supra, p. 159). 



