68 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



The specimen upon which Gyldenstolpe's record is based is in Stock- 

 holm ; it is an adult male, taken by Eisenhof er at Khun Tan in 1914. 

 The only other example known from our area is an adult male, col- 

 lected for de Schauensee at Chiang Saen Kao, April 20, 1935, and now 

 deposited in Philadelphia. 



Adult males have the upperparts dark slate, almost black, with four 

 blackish bands across the exposed portion of the square-ti\npe& tail; 

 the throat white, with a mere hairstreak of blackish down the center ; 

 the remaining underparts white, with ill-defined pale rufous barring 

 everywhere. Adult females have the upperparts blackish brown ; the 

 mesial stripe of the throat broader than in the male ; the remaining 

 underparts barred distinctly everywhere with white and dull brown- 

 ish rufous. Immature specimens are colored like the corresponding 

 age of soloensis, but are distinguishable by their longer, slenderer tarsi 

 and toes, and the different wing formula. The fourth primary is long- 

 est, then come the third and the fifth. 



BUTASTUR INDICUS (Gmelin) 



Gray-faced Buzzard Eagle 



[Falco] indicns Gmelin, Systeina naturae, vol. 1, pt. 1, 1788, p. 264 (Java, ex 

 Latham). 



Butastur indicus, Gyldenstolpe, Journ. Nat. Hist. Soc. Siani, 1915, p. 234 (listed) ; 

 Ibis, 1920, p. 748 (Khun Tan). — de Schauensee, Proc. Acad. Nat. Sci. Phil- 

 adelphia, 1929, p. 578 (Doi Suthep) ; 1934, p. 270 (Chiang Mai).— Deignan, 

 Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 166 (Doi Suthep) ; 1936, p. 76 

 (Doi Suthep, Chiang Mai). 



This buzzard eagle, which breeds in Japan and northern China, is a 

 regular but rather uncommon winter visitor to the plains and foot- 

 hills of northern Thailand. A specimen in Hannover was taken by 

 Eisenhof er at Pha Hing, April 26, 1912 ; I believe that Gyldenstolpe's 

 record for Khun Tan (1920) refers to the same specimen and that the 

 locality is erroneous as published. De Schauensee's birds from Chi- 

 ang Mai and Doi Suthep (1,500 feet) were taken December 26, 1928, 

 and January 25 and 29, 1933. I collected an adult female about 21 

 km. west of Ban Mae Rim, December 2, 1935, and an immature male 

 at Ban Na Noi (Nan Province), April 2, 1937. 



This is a tame and somewhat sluggish species. The Mae Rim bird 

 was shot from a low tree at a clearing beside a jungle road ; the Na 

 Noi specimen was perched upon a bush growing in a dry and fallow 

 ricefield. De Schauensee found his birds in dry deciduous forest at 

 the base of Doi Suthep. The Na Noi specimen had a large centi- 

 pede in its stomach. 



My birds had the irides golden-yellow ; the orbital skin pale yellow ; 

 the bill black, yellow at the base ; the cere and rictus yellow ; the feet 

 and toes yellow ; the claws black. 



