1920.] List of the Birds of Siam. 451 



it seems to be rather rare there. The specimens from 

 the eastern parts are hirger than those from the northern 

 localities, and may possibly belong to a distinct subspecies. 



Dicrurus annectens siainensis Kloss. 



JJicrurus a/medens sianieitai'i Kloss, Ibis, 1918, p. 22G : 

 Koh Lak, S.W. Siam. 



Apparently not common in Siam, and very few records 

 are available. Specimens have, however, been obtaiiK d in 

 eastern, south-eastern, central, and peninsular Siam besides 

 at thw t} pe-locality. 



Buchanga leucophaea disturbans Stnart Baker. 



Dicrurus leucop/ueus disturbans Sluart Baker, Nov. Zool. 

 XXV. 11)18, p. 293 : Amherst. 



Th'S Form inhabits the Malay Peninsula as far north as 

 Bangkok and extends east into Siam, where, however, it 

 seems to be rather rare, and has liithei to only been recorded 

 from Lat Biia Kao (E. Siam), Koh Lak (S.W. Siam), 

 and the island of Salanga, or Buket as it is called by the 

 Siamese. 



Buchanga atra cathceca Swinh. 



Dicrurus catJioscus Swinhoe, P. Z. S. Lond. 1871, p. 377: 

 ('hina. 



Of this race only a single specimen has hitherto been 

 recorded from Siamese territory, viz. at Bang Hue Pong in 

 northern Siam. 



Buchanga atra longns Pj). 



Dicrurus Ioih/us Bonaparte, Consp. Gen. Av. i. 1850, 

 p. 352 : Java. 



Ap|iai'ontly (juite common in suitable localities thioiighout 

 the whole country. 



Buchanga cineracea nigrescens Oates. 



Dicrurus ni(/rescens Oates in Hume's Nests and Eggs Ind. 

 Birds, ed. ii. 1889, p. 208 : Rangoon, Burma. 



Inhabits northern and central Siam, at least those parts of 

 the country situated north of the latitude of Bangkok. 



SER. XI. VOL. 11. 2 II 



