552 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



Zosterops erythropleura, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 

 1934, p. 240 (Doi Suthep, Doi Chiang Dao). — Deign an, Journ. Siam Soc. 

 Nat. Hist. Suppl., 1936, p. 126 (Doi Suthep). 



The chestnut-flanked white-eye seems to be a very uncommon winter 

 visitor to our provinces, where it has been recorded only from Doi 

 Suthep, Doi Chiang Dao, and Phu Kha, at elevations between 4,500 

 and 5,500 feet; the extreme dates for its stay are November 7 (1936) 

 on Doi Suthep and April 7 (1936) on Phu Kha. 



The present species usually feeds at the very tops of tall trees 

 and probably for this reason often escapes notice; I have, however, 

 on occasion seen it in quite low bushes, together with Z. p. mesoxantha. 



This form is evidently very closely related to Z. j. simplex, from 

 which it differs chiefly by having a broad stripe of chestnut down 

 along either flank (largely concealed by the closed wing) and by the 

 absence of yellow suffusion from the front and the supraloral region. 



ZOSTEROPS JAPONICA SIMPLEX Swinhoe 



Chinese Dark-green White-eye 



Z[osterops] sinensis Swinhoe [nomen nudum'], Ibis, 1861, p. 331, line 29 

 (southern China). 



Z[osterops] simplex Swinhoe [nomen nudum], Ibis, 1861, p. 331, line 29 

 (southern China). 



Zosterops simplex Swinhoe, Ibis, July 1863, pp. 294-295 ("Southern China, from 

 Canton to Foochow"). 



Zosterops simplex Swinhoe, Proc. Zool. Soc. London, Aug. 1863, pp. 203-204, 

 297-298 ("China from Canton to Foochow, and perhaps a little higher"). 



Zosterops simplex williamsoni, de Schauensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1929, p. 563 (Chiang Rai) ; 1934, p. 240 (Doi Chiang Dao, Chiang Saen, 

 "Chiengmai" [= Doi Suthep]). — Deignan, Journ. Siam Soc. Nat. Hist. 

 Suppl., 1936, p. 126 (Chiang Mai, Doi Suthep). 



"Unidentified White-eye," Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, 

 p. 154 (Chiang Mai). 



Zosterops japonica sinensis, Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 524 

 (Chiang Mai, Lampang, Doi Langka). 



The dark-green white-eye, known from the provinces of Chiang 

 Mai, Lampang, and Chiang Rai, is an uncommon or locally common 

 winter visitor, recorded between November 9 (1930) on Doi Langka 

 and March 1 (1933) on Doi Suthep. It is chiefly a bird of the plains 

 but has been taken on Doi Chiang Dao at 4,500 feet (2), on Doi 

 Suthep at 5,500 feet (1), and on Doi Pha Horn Pok at 6,400 feet (1) ; 

 owing to the difficulty of identifying the species in life, it cannot be 

 decided whether these examples were with others of their own kind 

 or were merely stragglers in company with montane forms. 



At Chiang Mai I saw this white-eye only in town gardens, and there 

 the small bands fed in such fructiferous trees as the longan and the 

 guava ; at Lampang, where Smith took four specimens, November 17, 



