10 PROCEEDINGS OP THE NATIONAL. MUSEUM vol. 70 



Family FALCONIDAE. Hawks, etc. 



33. CIRCUS CYANEUS CYANEUS (Linnaeus) 



Falco cyaneus Linnaeus, Sys. Nat., ed. 12, 1766, p. 126 (ex Edwards — 

 London). 



One immature male, Plain of Youngning, February. 



34. ACCIPITER NISUS MELANOCHISTUS Hume 



Accipiter melanochistus Hume, Ibis, 1869, p. 356 (Simla). 

 One immature male, Tseh Chung Mountains, Mekong Valley, 

 November; one immature male and female, near Youngning, Feb- 

 ruary. 



35. BUTEG BUTEO JAPONICUS (Temminck and Schlegel) 



Falco huteo japonicus Temminck and Schlegel, Fauna Japon. Aves, p. 16, 

 1844, pi. 6 and 6&, 1845 (Japan). 



One "male and one female, Chienehuan Plain, March 30 ; one male, 

 Youngning Plain, February. 



The above specimens illustrate three phases of plumage. The 

 female has the chest cinnamon, the breast sepia with rusty and 

 white markings, the thighs russet with a few faint buffy bars. The 

 male taken March 30 has the thighs light seal brown and the chest 

 muck streaked with white, while the male taken in February is mostly 

 buffy white below with a few brownish streaks, the thighs sepia, 

 with buffy margins to the feathers. The latter appears to be more 

 like the usual coloration of the race. They appear to be considerably 

 darker than specimens from more eastern localities. 



36. MILVUS LINEATUS (Gray) 



Haliaetus lineatus Gray, Hardwicke's 111. Ind. Zool., vol. 1, pi. 18, p. 1, 

 1832 (China). 



One adult male, Nguluko, 9,800 feet, April 20; one adult female 

 and one adult unsexed, Likiang Plain, 8,200 feet, August and Sep- 

 tember; one adult female, Tseh Chung Mountains, November; one 

 adult female. Plain north of Wualapi, Youngning, February. 



37. FALCO REGULUS INSIGNIS (Clark)? 



Aesalon regulus insignis Clark, Proc. U. S. Nat. Mus., vol. 32, 1907, p. 470 

 (Fusan, Korea). 



One adult male, Likiang Plain, 9,000 feet, April 14 ; one immature 

 male, Youngning Lake, 10,000 feet, February. 



The immature male is darker than the type of this race (also an 

 immature male of about the same age) and the adult is a rather dark, 

 richly colored specimen and very likely neither of these specimens 

 belong to this race, but I do not know where else to place them. 

 The wing of the adult measures 205 mm. 



