BIRDS FROM SIAM AND THE MALAY PENINSULA 201 



THEREICERYX FAIOSTMCTUS FAIOSTRICTUS (Temminck) 



Bucco faiostrictus Temminck, Nouveau recueil de planches colorizes d'oiseaux, livr. 

 88, pi. 527, May 1831 (Cochinchina). 



Five males and four females, Khun Tan, October 17-23, 1929, 

 August 28-September 10, 1930; one male, Doi Phra Chao, August 1, 

 1934; one female, Aranya, July 20, 1930; three females, Hin Lap, 

 October 1-3, 1932; four males and two females, Pak Chong, February 

 17 and May 14, 1925, April 24, 1926, November 30, 1929, June 22-26, 

 1934; nine males and six females, Sikeu, near Korat, February 14-15, 

 1926; one male and one female, Lamton Lang, May 26, June 2, 1934; 

 three males and one female, Sakeo, near Krabin, May 4-5, 1928; 

 three males and one female, Nong Yang, November 6-9, 1931; one 

 male, Huey Yang, Sriracha, August 1, 1932; two females. Ban Sadet, 

 Sriracha, May 29, 1925; one male Nong Khor, near Sriracha, February 

 6, 1927; one male Kao Seming, Krat, October 9, 1928; one male, Lem 

 Sing, Chantabun, March 16, 1930; two females Kao Sabap, October 

 24-28, 1933. 



This large series is fairly uniform. Some specimens have a bluish 

 tinge to the lower parts, while in a few specimens they are more 

 tinged with yellow, especially on the chest, than in the clear vanderpoel 

 green of the chest and abdomen of the majority of the series. The 

 bright tufts on each side of the jugulum are sometimes orange and 

 sometimes deepen to scarlet with a yellow fringe; sometimes the 

 bright tufts are lacking altogether, in which case the examination of 

 the heel pad usually indicates such specimens are birds of the year. 



A specimen in the United States National Museum (no. 278323) 

 from Daban, southern Annam, has the pileum a lighter brown and the 

 huffy streaks are broader than in any specimen in the series from 

 Siam or in four specimens from Cochinchina before me. There are 

 also some other slight differences that need not be mentioned at this 

 time. A recognizable race may occur in this part of its range. 



The form occurs from northern Siam to southwestern Siam and 

 eastward to Cambodia, Laos, Cocliinchina, and Annam. In Siam it 

 occurs nearly all over the country and as far to the westward as Hat 

 Sanuk, southwestern Siam, whence it has been recorded by Robinson 

 and Kloss." It does not occur in Peninsular Siam, and the above 

 record is also the most southern in this direction. 



The present form is easily distinguished from Thereiceryx lineatus 

 intermedins by the yellowish-green auriculars and the bright orange 

 or scarlet jugular tufts of the former and numerous other differences 

 but the above are sufficient. T. /. praetermissus Kloss is confined to 

 Southern China and Tonkin. This form I have not had the pleasure 

 of examining. 



« Journ. Nat. Hist. Soc. Siam, vol. 6, p. 166, 1923. 



