FASCICULI M A LA-TENSES 
81 
54. Sibia, sifnillima, Salvad, 
Sibia simillima, Sharps , P.Z. 5 ., 1886, p. 352 ; 1888, p. 274 ; Bonhote, p. 63. 
Sibia picaoides simillima, Hanert , p. 567. 
^ , 9 a( l. Tcl6m, Perak-Pahang border. 18th to 27 th January. 
(Nos. 546, 549, 550, 591, 594) 
The Long-tailed Sibia has the iris reddish- or hazel-brown, and the bill 
and feet black. 
* Very common at Telom in Bocks of four or five ; contrary to the 
habits of most of the hill birds, it usually keeps fairly high up in the trees, 
and is one of the most conspicuous and easily obtained species. 1 
55. Mixornis gularis, (Raffl.) 
Mixornis gularis, Sharpe , P.Z.S., 1888, p. 275; Bonhote, p, 64; Hartert , 
p. 567. 
t 
# ad, Bukit Besar, Nawngchik. 2,500 feet. 2nd September. (No. 375) 
$ ad. Ban Sai Kau. 22nd May. 
$ ad. Gedong, South Perak. 8th January. (No. 503) 
$ ad. Jeram Kawan, South Perak. 14th February. (No. 666) 
The Sumatran Yellow-breasted Babbler has the iris brown, the loral-space 
lead-blue, the bill bluish lead-colour, the feet greenish-brown, and the toes 
yellow. The black shaft streaks on the feathers of the throat seem to be 
widest in examples from the southern parts of its range, being most strongly 
marked in birds from the southern part of the Malay Peninsula and Sumatra. 
56. Stachyrhidopsis chrysaea, (Hodgs.) 
Cyanoderma chrysaea, Sharpe, P.Z.S., 1887, p. 440. 
Stachyridopsis chrysaea assimills, Hartert , p. 566. 
£ , 9,’id. Tclfim, Perak-Pa hang border. 3,500 feet. January. (Nos, 538, 552, 580) 
The Golden-headed Babbler has the iris dark sienna, the bill dark lead- 
colour, paler on tomia and pinkish at the base of the lower mandible, and the 
feet flesh-colour, inclining to yellowish behind. 
In spite of Mr. Hartert’s statement to the contrary (cf. Nov. ZooL ix, 
p. 566 (1902), I think Dr. Sharpe was perfectly justified in referring the 
Perak bird, collected by Mr. L. Wray, to this form rather than to S. assimiBs. 
The three specimens now before us agree perfectly with other birds from 
Perak, and are in my opinion inseparable from typical S. chrysaea, differing 
from S . assimilis in the colour of the back and underparts which are much 
brighter yellow. The range of S. assimilis appears to be limited to northern 
