KUNGL. SV. VET. AKADEMIENS HANDUNGAR. BAND 56. NIO 2. 'M 



without a large material to comparo with, it is hardly possiblc to identify the differenl 

 races. However, my specimens fairly well agrce with the desoription given by Si i \i: i 

 Baker for Mirajra assamica marionm. Mr. Stuart Baker bas also quite recently de- 

 scribed another new subspecies of a Bush Lark which he proposed to tiame after its 

 discoverer Mirajra cantillans williamsoni (Bull. Brit. Ornith. Club. Vol. 36. N:o CCX p. 9. 

 191.5). This new form was obtained by Mr. W. J. F. Williamson at the neighbourlioo< I oi 

 Bangkok wliere it was said to be common and a resident. According to the description 

 this form seems to be nearest to Mirajra philippensis Wardl. Rams. from the Philip- 

 pines. They then belong to the Group which is characterized by having the outher tail- 

 feather almost entirely white, with the dusky mark confined to the inner web only. 



In my collection there are no specimens from the neighbourhood of Bangkok, viz. 

 the type locality of this new race. The Koh Lak specimens belong to quite another group. 

 The light pattern on the outer tail-feathers is only confined to a narrow line on the outer 

 webs of the feathers and is of a påle rufous colour. 



Among the mountains of Upper Siarn another species was obtained viz. Mirajra 

 microptera Hume. This species belongs to the same group as Mirajra assamica Mc. Clell. 



The new race described as Mirajra cantillans ivilliamsoni is probably only confined 

 to the alluvial plain surrounding the Menam Chao Phaya river, where it seems to be a 

 resident according to Mr. Williamson who has found its nest and eggs. If it migrates 

 in some way during the cold season is still open to question. Anyhow no specimens 

 were obtained during my stay in the Siamese Malaya from November 1914 to the end of 

 February 1915. 



Fam. Motacillidae. 



36. Motacilla alba leucopsis. Gould. — The White-faced Wagtail. 



Motacilla alba leucopsis: Gyldenstolpe I p. 41; Gyldenstolpe III p. 171. 

 Motacilla alba: Williamson I p. 44. 



When going down the Meh Ping river from Chieng Mai to Paknam Po during the first 

 half of October 1914 the White-faced Wagtail was very common indeed along the course 

 of the river. It either rested on the stranded teak-logs or on the numerous sandbars, 

 and was generally seen single, though several specimens could occur quite close to each 

 other. Also observed on the paddy-fields of Northern and Central Siarn. 



Winter visitor only. 



37. Motacilla boarula melanope. Pall. — The Grey Wagtail. 



Motacilla boarula melanope: Gyldenstolpe I p. 41; Gyldenstolpe IT: Gyldenstolpe III p. 171. 

 Motacilla melanope: Robinson & Kloss p. 73. 

 Motacilla sulptiurea: Muller p. 361. 



$ Pak Koh 19 / 3 1914. L = 172 mm.; W = 72 mm.; T = 91 mm.; C = 12 mm. -- Irides: black. 

 Bill: horn colour. Legs: flesh colour. 



Fairly common during the cold season in the Northern Districts. 



