THE BIRDS OF NORTHERN THAILAND 553 



1928, it was "common in coco palms." In notes and feeding habits it 

 does not differ from its congeners. 



An example of March 1 is beginning the prenuptial molt. 



A female had the irides bright brown ; the bill black, with the base 

 of the mandible bluish plumbeous ; the feet and toes dark plumbeous, 

 the soles tinged yellowish ; the claws dark plumbeous. 



The present species has the upperparts olive-green, rather brighter 

 on the crown and with a suggestion of ashy on the mantle, strongly 

 suffused with yellow on the front and especially the supraloral region, 

 less strongly with the same color on the rump; the remiges and 

 rectrices dull black, edged with the same olive-green as the mantle ; 

 a very conspicuous eye ring of silky white feathers, narrowly inter- 

 rupted at the anterior corner of the eye by a patch of black which 

 covers the lores and the anterior inf raocular region ; the chin, throat, 

 uppermost breast, and the under tail coverts bright greenish yellow ; 

 the remaining underparts ashy, albescent on the center of the abdomen 

 and more or less strongly suffused with vinaceous. 



ZOSTEROPS PALPEBROSA MESOXANTHA Salvadori 



Karen Golden-green White-eye 



Zosterops mesoxantha Salvadori, Ann. Mus. Civ. Stor. Nat. Genova, ser. 2, vol. 7, 



1889, p. 396 (Taho, Karen-ni). 

 Zosterops palpebrosa vidua Riley, Proc. Biol. Soc. Washington, vol. 42, 1929, 



p. 162 (Doi Suthep. North Thailand). 

 Zosterops palpebrosa vicina, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 



1929, p. 562 (Doi Suthep).— Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1931, p. 154 (Doi Suthep). 

 Zosterops palpebrosa palpebrosa, Chasen and Boden Kloss, Journ. Siam Soc. 



Nat. Hist. Suppl., 1932, p. 248 (Doi Suthep). 

 Zosterops palpebrosa cacharensis [partim], de Schauensee, Proc. Acad. Nat. 



Sci. Philadelphia, 1934, p. 239 (Doi Suthep, Doi Chiang Dao). 

 Zosterops palpebrosa cacharensis, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 



1936, p. 126 (Doi Suthep).— Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 523 



(Doi Suthep, Doi Hua Mot). 



The present race of the golden-green white-eye is definitely known 

 in our area only from those hills of the Thanon Thong Chai and Khun 

 Tan chains (with the exception of Doi Nang Kaeo) which reach 

 elevations in excess of 4,500 feet ; on Doi Pha Horn Pok it ranges up 

 to 6,000 feet and, on Doi Suthep, is sometimes seen (attracted by 

 flowering trees) as low as 3,300 feet. Probably owing to the insuf- 

 ficient altitude, it has never been recorded from Doi Khun Tan by 

 any one of the numerous collectors who have visited that mountain. 



In large flocks, sometimes in winter accompanied by Z. erythro- 

 pleura and perhaps also by Z. j. simplex, the common white-eye 

 sweeps through bushes and trees, both high and low, at the forest's 

 edge, busily investigating cracks in the bark and the underside of the 



