BIRDS FROM SIAM AND THE MALAY PENINSULA 221 



found it rather common at Cbiengmai, Metang, and Cliieng Dao. 

 It has been reported also from a few other locaUties in northern Siam. 



The form is evidently confined to northern, western, and south- 

 western Siam. The records from southern Burma and Tenasserim 

 probably belong to this form. I have seen no records south of the 

 Island of Puket. 



Chrysophlegmaflavinuchajlavinucha (Gould) occurs in the Himalayas 

 east to Assam and south to northern Burma. 



CHRYSOPHLEGMA FLAVINUCHA PIERREI Oustalet 



Chrysophlegtna pierrei Oustalet, La Naturaliste, 1889, p. 44 (lower Cochinchina) . 



One female, Kao Pae Pan Nam, Lomsak, February 18, 1934; one 

 female, Aranya, July 14, 1930; one male, Udon, February 18, 1929; 

 one female. Pong, Udon, February 17, 1929; one male and one female, 

 Lat Bua Kao, July 30, 1929; one female, Sakeo, near Krabin, May 6, 

 1928; one male, Ban Ko Tan, March 4, 1929; one female. Ban Nakae, 

 March 3, 1929; two females, Pang Sok, August 26, 1926; one male, 

 Sikeu, near Korat, February 17, 1926; one male, Ban Tarn Dam, 

 March 7, 1930; one male, Lamton Lang, May 28, 1934; one female 

 and one immature male, Chantuk, June 14-15, 1934. 



The male of this form is readily distinguished from lylei in being 

 lighter below; the foreneck tinged with brown in the spotted area; 

 the spotted area of the foreneck extending farther forward, sometimes 

 to the mentum on each side and separating the yellow malar region 

 from the yellow of the chin; the malar region and chin a lighter yellow; 

 upper mandible usually dark to the tip; size smaller. 



The female of pierrei differs from the same sex of lylei in having 

 the brown of the tliroat and malar region Ughter and the upper man- 

 dible dark throughout. One male pierrei (no. 313255), from Ban 

 Ko Tan, has a pale tip to the upper mandible like lylei, but differs 

 otherwise. The two females from Pang Sok, August 26 (nos. 308100 

 and 308101), have the breast and belly washed with greenish yellow; 

 in the remainder of the series these parts are grayish olive. 



Five males oi pierrei measure: Wing, 156-164 (159.8); tail, 110.5- 

 125 (117); culmen, 34.5-36.5 (35.7) mm. Six males of lylei: Wing, 

 156-173 (166); tail, 108.5-122.5 (115.8); culmen, 36-40 (38.4) mm. 

 Nine females ot pierrei: Wing, 150-166 (160); tail, 104-116.5 (111.6); 

 culmen, 31.5-37 (34.2) mm. Three females of lylei: Wing, 161-169 

 (165.3); tail, 110-119 (113.7); culmen, 32-36 (34.7) mm. 



This form is confined to central, eastern, and southeastern Siam, 

 Cambodia, and Cochincliina. It probably occurs also in southern 

 Laos. De Schauensee ^^ took a female at Bua Yai, and other collectors 

 had previously recorded it from eastern Siam. 



" Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 249, 1934. 

 33527—38 15 



