MAMMALS COLLECTED BY DR. W. L. ABBOTT ON BORNEO 

 AND SOME OF THE SMALL ADJACENT ISLANDS. 



By Marcus Ward Lyon, Jr., 



Assistant Curator, Division of Mammals, U. 8. National Museum. 



INTRODUCTION. 



Before collecting on the mainland of Borneo, Dr. W. L. Abbott 

 made two expeditions to adjacent islands, the mammalian fauna of 

 which is closely allied to that of Borneo. One of these expeditions 

 was to the Natuna Islands, north of Borneo, and was made during the 

 spring and summer of 1900; the other was to the Karimata Islands, 

 off the west coast, during August and September, 1904. Lists of 

 the mammals obtained on these expeditions were published by Mr. 

 Gerrit S. Miller, jr., in 1901 and in 1906. x More recently Doctor 

 Abbott has visited the mainland of Borneo five times, on each 

 occasion stopping at some of the adjacent islands. An account of 

 the mammals collected on the first trip to the mainland, covering 

 the Kapuas River region, was published by me in 1907. 2 The present 

 paper aims to give an account of the mammals obtained on the 

 remaining four expeditions — two to southwestern Borneo and two 

 to southeastern Borneo — as well as those collected in the near-by 

 islands. For the sake of completeness, I have included in the 

 present paper the species collected in the Kapuas River region, as 

 well as those from Karimata Islands, the latter having been visited 

 a second time. Four short papers 3 have appeared recently which 



i Proc. Wash. Acad. Sci., vol. 3, pp. 111-138, March 26, 1901. Proe. U. S. Nat. Mus., vol. 31, pp. 55-66, 

 July 23, 190d. 



2 Proc. U. S. Nat. Mus., vol. 33, pp. 547-572, December 24, 1907. 



3 Lyon, Description of a new squirrel of the Sciurus prevostii group from Pulo Temaju, west coast of 

 Borneo. Smiths. Misc. Coll., vol. 4S, pp. 275-270, February 4, 1907. 



Lyon, Remarks on the Insecfovores of the genus Gymnura. Proc. U. S. Nat. Mus., vol. 36, p. 449, 

 May 27, 1909. Doctor Abbott's Bornean specimens listed. 



Elliot, On the genus Presbylis Esch., and Le Tarsier Bufion, with descriptions of two new species of 

 Tarsius. Bull. Amer. Mus. Nat. Hist., No. 28, pp. 151-154, May 27, 1910. Describes the tarsier from 

 the Kapuas River region. 



Elliot, Descriptions of some new species of monkeys of the genera Pithecus and Pygathrii collected by 

 Dr. W. L. Abbott and presented to the United States National Museum. Proc. U. S. Nat. Mus., vol. 

 38, pp. 313-352, August 6, 1910. Describes the common macaques from Karimata, the Kapuas River 

 region, Bawean Island, and Pulo Mala Siri. 



Proceedings U. S. National Museum, Vol. 40— No. 1809. 



