BIRDS FROM SIAM AND THE MALAY PENINSULA 285 



boihood of the Isthmus of Kra. A female from the Raheng District 

 certainly belongs to the northern form. 



Six males from eastern Burma (1) and northern Siam (5) measure: 

 Wing, 120-12G.5 (123.5); tail, 110-121 (115.8); culmen, 19-20.5 (19.9) 

 mm. Nine males from eastern and southeastern Siam: Wing, 120- 

 128.5 (123.8); tail, 110.5-127 (118.9); culmen, 18-21 (19.5) mm. 



I cannot tell whether the bird of the Himalayas is the same as that 

 of southern Burma, as no specimens are available from that part of its 

 range for comparison. Stuart Baker's ^^ highest measurements are 

 certainly higher than anything I have measured from Siam. 



The single male from Tenasserim seems to belong to the same form 

 as that of northern Siam. It measures: Wing, 121; tail, 112; culmen, 

 18.5 mm. 



The form ranges all over Siam proper apparently. Outside of Siam 

 it is found from eastern Bengal to Burma and Indo-China. 



CHAPTIA AENEA MALAYENSIS Blyth 



Chapfia malayensis Blyth (A. Hay MS.), Journ. Asiat. Soc. Bengal, vol. 15, 

 p. 294, 1846 (Malacca). 



Two m.ales and one female, Sichol, Bandon, September 3, 1929, 

 May 15, 24, 1930. 



Dr. W. L. Abbott collected one male, Prahmon, Trang, April 4, 

 1896, and one male, Tyching, Trang, May 28, 1896. He gives the 

 soft parts as: Iris dark brown; bill and feet black. 



The above specimens agree fairly well v/ith a small series of six 

 males from eastern Sumatra. 



The four males from Peninsular Siam measure: Wing, 117-120.5 

 (118.8); tail, 100-110 (107.5); culmen, 18-20 (18.8) mm. The six 

 males from Sumatra: Wing, 110-118.5 (114.3); tail, 93*^; culmen, 

 17.5-18 (17.8) mm. 



The United States National Museum possesses also an immature 

 male, apparently of this form, from southeastern Borneo. 



The form ranges from Borneo, Sumatra, and the Malay States 

 northward through Peninsular Siam to about the Isthmus of Kra. 

 Robinson and Kloss ^* record it from Tasan, which must be about its 

 northern limit. The range given by Stuart Baker ^^ seems to me 

 impossible. 



Birds in worn plumage become more or less metallic violet above, 

 while specimens in fresh plumage are steely blue. 



i' 1 he fauna of British India. Birds, ed. 2. vol. 2. p. 368. 1924. 



5« Five of the specimens are in molt, and the tails in four are not measured. 



« Journ. N.Tt. Hist. Soc. Siam. vol. 5, p. 346. 1924. 



« The fauna of Briti.sh India. Birds, ed. 2. vol. 2. p. 369. 1924. 



33.-2T— :i8- 



