426 BULLETIN 18 6, UNITED STATES NATIONAL MUSEUM 



but differ in the lack of striking markings on the center of the throat 

 and the sides of the neck and by having the upperparts (and some- 

 times the underparts) more or less strongly washed with blue. 



MONTICOLA SOLITARIUS PHILIPPENSIS (P. L. S. Miiller) 



Chinese Blue Rock Thrush 



Turdus Philippensis P. L. S. Mullek, Natursystems Supplements- und Register- 

 Band, 1776, p. 145 (Philippine Islands, ex Bullion). 



Monticola solitaria philippensis, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, 

 p. 170 (listed) ; Ibis, 1920, p. 478 ("Siam"). 



Monticola solitarius philippensis, Gyidenstolpe, Kungl. Svenska Vet.-Akad. 

 Handl., 1916, p. 48 (Pha Kho). 



Two male specimens in Stockholm, one taken by Eisenhofer at 

 Khun Tan, the other by Gyidenstolpe at Pha Kho (March 21, 1914), 

 are best placed with this more eastern race of the blue rock thrush, 

 which is probably the form wintering commonly in those provinces 

 east of the Khun Tan chain. 



The adult male of philippensis differs from that of pandoo in its 

 rather brighter shade of blue and by having the under wing coverts, 

 upper flanks, abdomen, and under tail coverts chestnut-rufous instead 

 of blue. Females and immatures seem to be indistinguishable from 

 those of other races. 



All degrees of intergradation occur between typical philippensis 

 and typical pandoo and it is not likely that many specimens from our 

 area will show the extreme plumage phase of the former race. 



TURDUS BOULBOUL BOULBOUL (Latham) 



Indian Gray-winged Blackbird 



[Lanius] Boulboul Latham, Index ornithologicus, vol. 1, 1790, p. 80 (India; 



type locality restricted to Darjiling, by Stuart Baker, Fauna Brit. India, 



Birds, ed. 2, vol. 2, 1924, p. 130). 

 Turdus boulboul, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, p. 112 (Doi 



Suthep). 



The gray-winged thrush is known from Thailand only by an adult 

 male that I collected on Doi Suthep, 5,500 feet, January 25, 1936. It 

 is probably a very rare winter visitor. 



My specimen was found hopping about on the bare ground of the 

 bungalow colony just at the summit of the mountain, acting much like 

 the blackbirds of more northern countries. 



It had the irides brown ; the eyelids edged yellow ; the bill orange ; 

 the tarsi brown in front, yellow behind ; the toes brown ; the soles yel- 

 low ; the claws horn. 



The adult male has the tips of the median upper wing coverts, the 

 outer webs of the greater coverts and inner secondaries, and the outer 



