308 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



April 3, 1931; one male and one female, Sam Roi Yot, November 8j 

 11, 1932; two females, Muang Kanburi, April 7, 11, 1928; one male, 

 Kwe Noi, Kanburi, September 20, 1929; one male and one female, 

 Bo Ploi, Kanburi, September 26, 1929; one male and one female, 

 Bangkok, February 22 and April 7, 1924; two females, Bung Borapet, 

 June 28, 1932; one male, Pasak Eiver, October 20, 1932; one male, 

 Ban Tawai Plira, October 22, 1932; three males, LomJvao, Pasak Val- 

 ley, February 21, 1934; one male. Ban Nam Kien, Nan, April 19, 

 1930; one female, Prae, ApriJ 28, 1930; one male. Ban Chumporn, 

 February 25, 1929; one male and one female, Kumpawapi, near Udon, 

 March 20, 1929; one male, Hin Lap, December 11, 1931; one female, 

 Nong Mong, Krabin, August 24, 1925; one male and one female, Pak 

 Chong, December 8, 1929; one male, Gengkoi, October 16, 1932; one 

 male, Lem Sing, June 26, 1931. 



Dr. W. L. Abbott collected one adidt male, two adult females, and 

 two young males, Tyching, Trang, IMay 22-June 1, 1896. He gives 

 the soft parts as: Iris blue; bill and feet black. 



The two young birds had barely left the nest and were taken June 1. 



Adults of both sexes in fresh fall or v,anter plumage are a dark iri- 

 descent coppery oily green. As the breeding season advances, the 

 upperparts become more or less steely blue. The young are dull black 

 without any gloss, except on the wings, which are greenish like the 

 adults. 



I have divided the large series above with some other specimens 

 into three geograpliic series, as follows: 



(1) Java, the Malay Peninsula, and southwestern Siam. 



(2) Central and northern Siam. 



(3) Eastern and southeastern Siam and southern Annam. 



Comparing specimens in the same stage of plumage, I find no differ- 

 ence in color between the three series and little or no difference in 

 average measurements. The tail varies greatly in length and in the 

 width of the central tail feathers at the tip, but I am convinced that 

 this is either individual or an age character and not geographic. 



Eleven specimens from Java (4) and Peninsular and southwestern 

 Siam (7) measure: Wmg, 114-120 (116.5); tail, 109-198 (182.2); cul- 

 men, 21-23.5 (22.3) mm. Twelve specimens from central and north- 

 ern Siam: Wing, 109-124 (114.5); tail, 173-204 (186.9); culmen, 20-24 

 (21.9) mm. Twelve specimens from eastern and southeastern Siam 

 (10) and southern Annam (2): Wing, 113.5-122 (118.5); tail, 162-206 

 (184.7); cuhnen, 20-23 (21.9) mm. 



I have seen no specimens from Sumatra or Borneo. 



The species ranges from Pegu east to Siam and Indo-China and 

 south through Peninsular Siam to Sumatra, Java, and Borneo. 



