BIRDS FROM SIAM AND THE MALAY PENINSULA 371 



one female, near Krabin, May 2-8, 1928; one male and three females, 

 Kao Seming, Krat, October 10-16, 1928, January 2, 1930; three males, 

 Kao Sabap, October 24 and 30, 1933; one female. Lam Klong Lang, 

 Pak Chong, June 4, 1925; one male and one female, Fak Chong, 

 November 15, 1925 and November 19, 1929; one male, Pran, April 1, 

 1931 ; four males and three females, Nong Yang, October 20-Noveniber 

 16, 1931; one male, Hin Lap, November 6, 1931; four males and one 

 female, Khun Tan, 3,000 feet, August 25-September 7, 1930, February 

 16, 1932; one male and one female, Aranya, July 13, 1930; one male, 

 Mae Hong Sorn, January 3, 1933; one male, Meserieng, January 20, 

 1933; one male, Muek Lek, April 17, 1933. 



Dr. W. L. Abbott collected the following specimens in the Malay 

 Peninsula Region: Seven males and five females, Trang (Lay Song 

 Hong, September 8-November 15, 1896; Tyching, July 3, 1896; 

 Prahmon, February 22 and March 3, 1896; Kao Soi Dao, 1,500 feet, 

 February 15, 1899; near Kao Nok Ram, January 5, 1899; Kao Nok 

 Ram, 3,000 feet, January 15, 1899; Trang, January 4, 27, 1897); one 

 male, and four females, Mergui Archipelago (Bentinck Island, March 

 8, 1900; Heifer Island, March 6, 1900); one female, Victoria Point, 

 Tenasserim, March 31, 1900; one male, Maliwun, Tenasserim, 

 March 25, 1900. 



There is an average difference between a series from northern and 

 eastern Siam and a series from Peninsular Siam. The Peninsular 

 series has a more j^ellowish tinge to the upper back and the blue on the 

 wing is deeper; the average size is a little greater. 



Ten males from eastern and northern Siam measure: Wing, 82-86.5 

 (83.9); culmen, 16-17 (16.5) mm. Ten males from Peninsular Siam: 

 Wing, 83-88.5 (85); culmen, 17-19 (18) mm. 



While these differences are average, yet individual specimens from 

 either series can be picked out that exactly or nearly match in size 

 and color. 



This form ranges from south of the Brahmaputra in Assam south 

 through Burma and northern Siam down Peninsular Siam to about 

 latitude 6'^ 30' N.; eastward it extends to Cambodia, Cochinchina, 

 Laos, and Annam. Apparently it is a very common bird all over Siam 

 proper and in Peninsular Siam. The present form is distinguished 

 from icterocephala by having the crown greenish and the yellow on 

 the side of neck less extensive. 



CHLOROPSIS COCHINCHINENSIS ICTEROCEPHALA (Lesson) 



Phyllornis iderocephalus Lesson, Rev. ZooL, 1840, p. 1G4 (Sumatra and Borneo). 



One male, Bangnara, Patani, July 4, 1926. 



Dr. W. L. Abbott collected one female, Packa, Trengganu, Sep- 

 tember 27, 1900, and two immature males, Rumpin River, Pahang,, 

 June 9 and 21, 1902. 



