MAIVOIALS COLLECTED IN EASTERN SUMATRA BY DR. W. L. ABBOTT DURING 1!)03. 1906, AND UK)7, AVITIl DESCRIPTIONS OF NEW SPECIES AND SUBSPECIES. By Marcus Ward Lyon, Jr., Assistant Curator, Division of Manunals, I'. ,S. Xational Museum. INTRODUCTION. During the last eight jeavf^ Dr. W. L. Abbott has visited various localities along the eastern coast of Sumatra for the purpose of mak-ing collections of natural history and of enthnology, all of which he has ])resented to the United States National Museum. Mammals and birds have constituted by far the greater part of the zoological collections. The folloAving paper is a systematic account of the mam-mals that he has obtained in the general region of eastern Sunuitra. Thirteen new species and three new subspecies are described in it. Doctor Abbott's first visit to eastern Sumatra was in August and September, 1901. At that time he ascended the Indragiri River (see map, page 023) for a short distance and made collections of mammals from along its banks. This collection, together with material gath-ered during the same year from the near-by islands of the Rhio-Linga Archipelago, was described in 1902 by Mr. Gerrit S. Miller, Jr." It is not treated of in the following pages except in an incidental manner. The next visit of Doctor Abbott to eastern Sumatra was in August and September, 1903, when he made a small collection from along the banks of the Kateman River, a stream not far from the Indragiri which had been visited two years before. He again made a trip to the east coast of Sumatra during the period from November 15, 1905, to February 12, 1906, to Aru Bay (see map, page 621). From there he proceeded down the coast for about 250 miles to the strait, knoAvn as Salat Rupat, between Pulo Rupat and the mainland of Sumatra. " Manmials collected by Dr. W. L. Abbott in the region of the Indragiri River, Sumatra, Proc. Acad. Nat. Sci. Philadelphia. March. ]1»02. issued .luiio 11. I!t02. pp. 143-159. Proceedings U. S. National Museum. Vol. XXXIV— No. 1626. 619
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