628 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. XXIV. 
TRAGULUS NAPU (F. Cuvier). 
1822. Moschus napu EF. Cuvier, Hist. Nat. Mamm., IV, pl. xxxIx. 
1889. Tragulus napu, JENTINK, Notes Leyden Museum, XI, p. 25. 
1902. Tragulus napu, STONE and Ren, Proc. Acad. Nat. Sci. Philadelphia, 
March, 1902, pp. 127-131, issued June 4, 1902. 
1905. Tragulus napu, SCHNEIDER, Zool. Jahrb. Syst., XXIII, p. 133. 
Seven specimens from the vicinity of Aru Bay and five from the 
Siak region farther down the coast. 
For measurements of the adults see table, page 631. 
TRAGULUS KANCHIL (Raffles). 
1822. Moschus kanchil RAFFLES, Trans. Linn. Soe. London, XIII, p. 262. 
1889. Tragulus kanchil, JENTINK, Notes Leyden Museum, XI, p. 25. 
1902. Tragulus kanchil, StoNE and REHN, Proc. Acad. Nat. Sci. Philadel- 
phia, March, 1902, p. 128, issued June 4, 1902. 
1905. Tragulus kanchil, SCHNEIDER, Zool. Jahrb. Syst., XXIII, p. 133. 
Twelve specimens from the vicinity of Aru Bay. This series is 
in all respects similar to the series of Zragulus collected by Doctor 
Abbott at Tapanuli Bay, on the west coast of Sumatra.¢ The Traguli 
of this group from the Siak region in eastern Sumatra are very vari- 
able but present certain average differences, and may be recognized 
as a distinct race described below. 
For measurements of the adults see table, page 631. 
TRAGULUS KANCHIL LONGIPES, new subspecies. 
Type.—slan and skull of adult male, Cat. No. 144141, U.S.N.M., 
collected on the Little Siak River, eastern Sumatra, November 3, 
1906, by Dr. W. L. Abbott. Original number 4853. 
Diagnostic characters.—Similar in all respects to typical Zragulus 
kanchil except that the hind foot is distinctly longer. 
Color.—The color of typical examples of Tragulus kanchil longipes 
is exactly like that of 7. hanchil kanchil, so that no detailed descrip- 
tion is necessary. Certain of the specimens, however, two from Maka- 
pan, one from Kompei, and one from Sungei Mandau, are distinctly 
hghter or more “ yellow ” in color than is the type and the rest of 
the series, being practically identical in coloration with the animal 
described below as Tvagulus fulvicollis. 7 
Skull and teeth.—I have been able to detect no aitecene between 
the skulls and teeth of Aru and Tapanuli Bay examples of Tragulus 
and specimens from the Siak region. 
Measurements.—See table, page 632, and diagram, page 629. An 
examination of this table and diagram shows that the Siak 7ragulus 
is essentially similar in size and weight to specimens from Aru Bay 
with the exception of the hind foot. In Aru Bay examples this 
@ Miller, Proc. U. S. Nat. Mus., XXVI, p. 442, and table, p. 446. 
