474 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



dates for its occurrence with us are September 26 (1936) on Doi Suthep 

 and April 18 (1936) on Phu Kha. 



This willow warbler may be seen in almost any sort of arboreal 

 cover except bamboo and the denser evergreen forest; it is the Phy- 

 loscopus oftenest observed in gardens and orchards. 



A male had the irides dark brown; the maxilla dark horny-brown; 

 the mandible horny yellow, tipped dark horny brown ; the feet, toes, 

 and claws horny brown. 



P. i. inornatus, in fresh autumn dress, has the upperparts bright 

 olive-green, the forehead, crown, and nape with an ill-defined paler 

 median streak; the wings with the coverts broadly tipped yellowish 

 white to form two conspicuous bars, the inner primaries and outer 

 secondaries narrowly tipped white, the inner secondaries broadly 

 edged apically with greenish white; the lores and postocular streak 

 dark olive-green ; the broad supercilium pale yellow ; the underparts 

 white, more or less strongly washed everywhere with greenish yellow ; 

 the under wing coverts and axillaries pale yellow. 



Ticehurst records (7oc. cit., p. 105) an example of P. i. mandellii 

 (Brooks) from "Siam"; the specimen very probably came from some 

 locality in northern Thailand. 



phylloscopus proregulus chloronotus (g. r. gray) 

 Nepalese Yellow-rumped Willow Warbler 



Abrornis chloronotus G. R. Gray, Catalogue of . . . Mammalia and birds 

 of Nepal and Thibet . . . British Museum, 1846, pp. 66, 152 (Nepal). 



P[hylloscopus~\ proregutus [sic] lorresti, Chasen and Boden Kloss, Journ. 

 Siam Soc. Nat. Hist. Suppl., 1932, p. 245, footnote (Doi Suthep). 



Phylloscopus proregulus forresti, Deignan, Journ. S'iam Soe. Nat. Hist. Suppl., 

 1936, p. 116 (Doi Suthep). 



The yellow-rumped willow warbler is a rare winter visitor to north- 

 ern Thailand, known thence by only three specimens: Two males 

 collected by Aagaard on Doi Suthep, 5,500 feet, in February or 

 March, 1931; a female taken by me on Phu Kha, 4,500 feet, April 6, 

 1936. 



The Phu Kha bird was found only a few feet above the ground in 

 a dense tangle of coarse grass and Hubus sp. at an abandoned hai. 



This species has the forehead, crown, and nape deep, almost black- 

 ish, olive-green, with a broad yellowish olive-green median line; the 

 remaining upperparts, except for the pale yellow rump, buffy olive- 

 green ; the wing coverts tipped with yellowish white to form two con- 

 spicuous bars; the lores and postocular streak blackish olive-green; 

 the supercilium olivaceous-yellow ; the underparts white, more or less 

 strongly washed everywhere with pale olivaceous-buff; the under 

 wing coverts and axillaries pale yellow. 



