172 Journal of the F.M.S. Museums. [Vov. VIII, 
undersurface, and by the less extent of the yellow on the 
forehead. Very few female specimens are however available 
from the southern parts of the Malay Peninsula, and it should 
be noted that the characters mentioned are precisely those 
that differentiate immature specimens of P. montanus from the 
adult females. Of the two males shot at Sungei Penohon the 
same day one has the greater part of both webs of the central 
pair of tail feathers black, thus approaching P. andamanensts, 
than which species, however, it is decidedly smaller. 
96. Pericrocotus montanus, Salvad. 
Pericrocotus montanus, Salvad. Ann. Mus. Civ. Gen. xiv, 
p. 205 (1879); Sharpe, Ibis, 1889, p. 193; id. op. cit. 1892, 
Pp. 435; Vorderman, Nat. Tijd. Nederl. Ind. xlix, p. 398, 
no. 180 (1889); Salvad. Ann. Mus. Civ. Gen. (2) xi, p. 54 
(1891) ; Hartert, Nov. Zool. 1x, p. 554 (1902) ; Ogilvie Grant, 
Fascic. Malay. Zool. 11, p. gt (1905); id. Journ. Fed. Malay 
States Mus. ill, p. 34 (1908); Robinson, op. cit. il, p. 192 
(1g09); id. Hand-list Birds Malay Penins. p. 14, no. 391 
(1910) ; id. Journ. Fed. Malay States Mus. vi, p. 33 (1915). 
Pericrocotus cinereigula, Sharpe, Ibis, 1889, p. 192 ; White- 
head, Exploration, Kinabalu, plate to p. 40 (1893). 
Pericrocotus wrayt, Sharpe, P. Z. S. 1888, p. 269, pl. xv. 
Pericrocotus croceus, Sharpe, P. Z.S. 1888, p. 269; Bonhote, 
P. Z. S. (i) 1901, p. 60. Ogilvie Grant, Fascic. Malay. Zool. 
111, p. QI (1905). 
a. 1 4. Siolak Daras, Korinchi Valley, Sumatra, 
3,000 feet. 16th March, 1914. [No. 157.] 
6, 3%. Sungei Kumbang, Korinchi, Suma- 
tra, “A,70Ommecta |Ist-17th) April) sone 
[Nos. 534, 609, 727, 767, 817, 831, 981-2. ] 
j-l. 1 43,2 %. Barong Bharu, Barisan Range, W. 
Sumatra, Lat. 2° S. 4,000 feet. 5th-11th 
June, 1914. [Nos. 1901, 1989-90. | 
“Tris dark hazle, bill and feet black.” 
Fairly common round Sungei Kumbang, in habits similar 
to the other species. 
b-1. 
On 
The three species of Pericrocotus in Korinchi seems to have 
fairly well defined zones in altitude. P. zanthogaster, being 
the valley form, ranging from the low country up to about 
3,000 feet, where it is replaced by P. montanus up to 5,000 feet, 
above which up to 8,000 feet, P. m#niatus is the only one 
found. 
This series seems fairly uniform and does not include 
males with very pale grey throats, which occur in Bornean 
and Malayan collections, being the variant on which Sharpe 
founded his P. cinereigula. 
Expedition to Korinchi: 
