398 BULLETIN 17 2, UNITED STATES NATION.VL MUSEUM 



This would give a rough range for the form from North Cachar south 

 tlirough Upper Burma, all Siam north of the Isthmus of lu-a and 

 possibly French Indo-China. 



Family TROGLODYTIDAE: Wrens 



PNOEPYGA PUSILLA PUSILLA Hodgson 



Pnoepyga pu.^illus Hodgson, Proc. Zool. Soc. London, 1845, p. 25 (Nepal). 



Two males, Doi Nangka, April 22, 27, 1931; three males. Pang 

 Meton (Doi Nangka), May 2-5, 1931. 



One male has the feathers of the lower parts edged with white, the 

 centers of the feathers dark olive; the throat white with very narrow 

 dark olive borders to the feathers. The other four males have the 

 feathers of the lowerparts edged with cinnamon-buff, the feathers of 

 the throat entirely of this color or slightly edged with dark olive. One 

 of the buff-colored males is becoming white on the throat, 



Stuart Baker ^^ regards these differences in a related species, P. 

 squamafa, as sexual. If this is correct, most of the specimens in the 

 United States National Museum are wrongly sexed. A specimen from 

 Suifu, Szechwan, has the feathers of the lowerparts edged with white 

 and resembles the Doi Nangka specimen in this stage of plumage 

 and evidently belongs to this form. 



The range of the form extends from Nepal, Assam, Burma, and 

 western China to Siam. 



Robinson and Kloss ^* say that a pair taken on Kao Nawng, 4,000 

 feet, Bandon, are intermediate between this and P. p. harterti of the 

 Malay States. Apparently there are no other records for Siam. 



The species has been divided into a number of forms. 



Family TURDIDAE: Thrushes 



BRACHYPTERYX LEUCOPHRIS NANGKA (Riley) 



Heleroxenicus nangko Riley, Proc. Biol. Soc. Washington, vol. 45, p. o9, 1932 

 (Pang Meton, Doi Nangka, Siam). 



One female, Doi Nangka, April 22, 1932; three nuiles and one 

 female. Pang Meton, Doi Nangka, April 22-May 6, 1932. 



Tills form is similar to B. I. leucophris of Java, but is lighter, less 

 rusty above; below the pectoral band is broader and the white of the 

 throat lightly edged with tawny-olive, pure white in leucophris. 

 The two forms are of about the same size. 



This is a small bird with a short tail, snuff brown above; white 

 below with a tawny-olive pectoral band; flanks tawnj^-olive. The 

 male has a supraioral white streak; tlie female has this streak obscured 

 by buffy. The sexes are of about the same size. 



" The fauna of British India, Birds, ed. 2. vol. 1, p. 458, 1922. 

 w Journ. Nat. Uist. Soc. Siam, vol. 5, p. 304, 1924. 



