MAMMALS COLLECTED IN EASTERN SUMATRA BY DR. 
W. L. ABBOTT DURING 1903, 1906, AND 1907, WITH 
DESCRIPTIONS OF NEW SPECIES AND SUBSPECIES. 
By Marcus Warp Lyow, JR., 
Assistant Curator, Division of Mammals, U. S. National Museum. 
INTRODUCTION. 
During the last eight years 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 presented to the United States National Museum. Mammals 
and birds have constituted by far the greater part of the zoological 
collections. The following paper is a systematic account of the mam- 
mals that he has obtained in the general region of eastern Sumatra. 
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 623) 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, known as 
Salat Rupat, between Pulo Rupat and the mainland of Sumatra. 
“Mammals collected by Dr. W. L. Abbott in the region of the Indragiri River, 
Sumatra, Proc. Acad. Nat. Sci. Philadelphia, March, 1902, issued June 11, 1902, 
pp. 148--159. 
PROCEEDINGS U.S. NATIONAL Museum, VOL. XXXIV—No. 1626. 
619 
