82 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OF THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 
W = 62 mm.; T = 57 mm.; C= 8 mm. — ¢ Koon Tan "4/5 1914. L = 125 mm.; W = 58 mm.; T = 53 
mm.; C = 8 mm. = Irides: blackish brown. Bill: horn colour. Legs: brownish yellow. 
The four specimens of the Grey-headed Flycatcher were all collected among the 
Koon Tan Hills where this species was fairly common. 
A young male shot on the 14th of May 1914 has a plumage very similar to that 
of the adult bird but the yellow colour of the underparts of the body is, however, very 
much paler. 
151. Cryptolopha burkii tephrocephalus. Anprers. —- Anderson’s Flycatcher Warbler. 
Cryptolopha burkii tephrocephalus; Gyldenstolpe I p. 30. 
Cryptolopha burki tephrocephala; Gyldenstolpe III p. 167. 
& Koon Tan %/9 1914. L= 107 mm.; W = 56 mm.; T = 45 mm.; C = 10 mm.; Tarsus = 15,5 
mm, — Irides: brown. Bill: upper mandible horn colour, lower mandible yellowish brown. Legs: yellowish brown. 
This species seems to be very rare in Siam and only two specimens were collected 
during the whole journey. Both these specimens were obtained among the Koon Tan 
mountains. It probably breeds in Siam, because one specimen was shot as late as at 
the beginning of September 1914. 
152. Abrornis superciliaris. Tick. — The Yellow-bellied Flycatcher Warbler. 
Abrornis superciliaris: Gyldenstdlpe I p. 30; Gyldenstolpe III p. 167. 
Sex Localig Date Length | Wing Tail Culmen 
mm. mm. mm. mm. 
of Koon Tan 1/5 1914 100 48,2 43,2 8 
ou Koon Tan 16/5 1914 98 48,3 43,3 9 
on Koon Tan 50/5 1914 95 42 34 8 
foal Doi Par Sakeng 11/7 1914 90 45 34 9 
2 Pak Koh 17/, 1914 93 45 38 9 
g Koon Tan 8/6 1914 96 45 42 8 
g Koon Tan M/s, 1914 99 45,5 40 9 
g Koon Tan 50/5 1914 95 46,7 38,5 8 
Trides: black. Bill: horn colour. Legs: pale brown. 
The Yellow-bellied Flycatcher Warbler was not uncommon in the bamboo-jungles 
in the North of Siam, but it was never met with in the Siamese Malaya. 
Another allied form Abrornis schwanert TEM. has, however, recently been found 
by Roxsinson (Journal Fed. Malay States Mus., Vol. V N:o 3 p. 101, 1915) in Bandon, 
a Siamese Province in the Malay Peninsula south of the places I visited during my jour- 
ney. This form is very similar to A. superciliaris Tick. and only differs in having the 
head and ear-coverts of a darker ashy colour, which abruptly contrasts with the colour 
of the back. In A. superciliaris the ashy colour is shading off gradually into the colour 
of the back. 
