62 NILS GYLDENSTOLPE, ZOOLOGICAL RESULTS OE THE SWEDISH ZOOLOGICAL EXPEDITIONS TO SIAM. 



In May 1914 a fine specimen, clearly belonging to this species, was obtained on one 

 of the Koon Tan Hills. The bill is perfectly black wlrich is the main point of difference 

 between this species and the allied M. temmincki Vig., which also has been found among 

 the mountains of Northern Siarn. 



All members of the Genus Myiophoneus seem to migrate in some way during the 

 winter months. 



107. Myiophoneus eugenei. Hume. — The Burmese Whistling-Thrush. 



Myiophoneus eugenii: Gyldenstolpe II; Gyldenstolpe III p. 165; Robinson III p. 750. 



^ Koon Tan 21 / & 1914. L = 355 mm.; W = 183 mm.; T= 144 mm.: C = 29 mm. — 1 ad. Koon 

 Tan 1014. AV = 167 mm.; T = 130 mm.; C = 24 mm. — $ Koh Lak Vis 1914. L = 303 mm.; W= 166 

 mm.: T = 121 mm.: C = 25 mm. — J* Koon Tan 2 *A> 1914. L = 306 mm.: W = 167 mm.: T = 122 mm.: 

 C = 26 mm. — Irides: brown. Bill: borny yellow. Legs: black. 



Distributed över the whole of Northern Siarn and also obtained in the Siamesc 

 Malaya, though always rather rare and only seen in limited numbers. 



In the literature this species is generally recorded as an inhabitat of mountain 

 torrents and rocky ravines among the hills. 



I found it in such places but also in secondary jungles in low-lying country and 

 one specimen was seen, and another one procured, in a garden at Koh Lak. When 

 observed it was jumping about on the ground in search of food. 



The males are much larger and more heavily built than the females. Especially 

 t hcir bilis are very strong and robust. 



In the collections of the Royal Natural History Museum of Stockholm there is a 

 specimen of a Myiophoneus obtained in Java 1880 according to the label. 



I have carefully examined this bird and have come to the conclusion that it 

 must be a specimen of Myiophoneus crassirostris, Robinson, which has been obtained 

 in the Northern Malay Peninsula and on the Langkawi and Teratau Islands. 



If the locality ».Java» is correct, which however seems a little doubtful to me (it 

 may be a trade skin brought över from the Malay Peninsula and incorporated in our 

 Ja van collection) it adds a new bird to the Ja van fauna on the same time as it extends 

 considerably the distributional area of this fine species. 



Fam. Sibiida*. 



108. Herpornis xantholeuca. Hodgs. — The White-bellied Herpornis. 



Herpornis xantholeuca: Robinson & Kloss i>. 63; Grant p. 80; Robinson I p. 107. 



ef Koon Tan 7 /c 1914. L = 108 mm.; W = 64,7 mm.; T = 44 mm.; C = 11,5 mm. — ^ Koon Tan 

 '■'■";:, 1914. L = 123 mm.: W = 67,2 mm.: T = 4<> mm.: C = 11 mm. — $ Koon Tan 13 / 1914. L = 108 

 mm.; W = (i2,r, mm.: T = 47 mm.; C = 11 mm. — $ Koh Lak Paa 7 /"2 !914. L = 115 mm.; W = 61,5 

 mm.; T = 4(;.r> mm.; C = 11,7 mm. - Irides: brown to yellowish white. Kil: light brown. Legs: flesh colour. 



