1918. ] H. C. Ropinson & C. B. Ktoss: Birds. 209 
Oreocincla horsfieldi affinis, Richmond, Proc. Biol. Soc. 
Washington, xv, p. 158 (1902), (Trang, N. Malay Peninsula). 
a-t. 3¢, rdimm., 3?, 2?imm. Korinchi Peak, 
Sumatra, 7,300 feet. 23rd April-6th May, 
rg14. [Nos. 1098, 1116, 1120, 1184-5, 1317, 
1349, 1372, 1433.] 
j-k. 146,1%. Korinchi Peak, Sumatra, 10,000 feet. 
28th April, rg14._ [Nos. 1258-9.] 
“Adult female :—Iris hazel, upper mandible horn, lower 
bluish horn, yellowish at gape and tomia, darker at tip, feet 
brownish flesh.” [No. 1258. | 
“Immature female:=~-Iris hazel, bill plumbeous horn, 
yellow at gape, feet brownish pink, tinged with yellow.” 
This species has not hitherto been recorded from Sumatra, 
but as the svnonymy shows, is known from East and West 
Java, from Lombok, from the mountains of the northern 
(Siamese) portion of the Malay Peninsula and doubtfully from 
Bali, though as a matter of fact it ic almost certain to occur 
there (Stresemann, Nov. Zool. XX, p. 366 (1913)). 
The Northern Peninsula bird has been described as 
subspecifically distinct, but in view of the fact that the type is 
unique and the differences are extremely minute, the validity 
of the form cannot be regarded as established. From about 
the level of our camp at 7,300 up to over 10,000 feet this very 
handsome thrush was fairly abundant though rather shy. 
The note was that of the English song thrush, though rather 
harsher, and the bird kept almost exclusively to the ground, 
only flying up into low shrubs when alarmed. 
Immature birds differ from the adults in having the black 
markings on the lower surface less clearly defined and in the 
greater predominance of the subterminal ochreous band on 
the feathers of the upper parts. The golden ochreous tips to 
the wing coverts are also much more pronounced. 
The dimensions of the series of eleven birds, all of which 
are practically full grown, though all are not fully adult, are 
as follows, that of the tvpe of Oveocincla affinis horsfieldi, 
Richmond, being placed in brackets for comparison. 
Total length, 265-278 (267 mm.). Wing, 134-140 (142). 
Tail, 95-112 (93 mm.). Bill from gape, 31-35 (30.5 mm.). 
Tarsus, 30-33 (34 mm.). 
In all our specimens the 3rd, 4th and 5th primaries are 
practically equal and longest. 
We have also compared the Sumatran series with nine 
specimens from various heights on the Gedeh and Pangerango 
Volcanoes, Western Java, which are practically topotypes of 
the species and can, after allowing for the greater freshness of 
the Javan skins, detect no differences, a slightly more olivac- 
eous tinge being apparent in three very adult Javan birds. 
Part II: Vertebrata. 17 
