522 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



above; more whitish below, the streaks narrower; the under tail 

 coverts much paler. 



There is not nmch or any difference in size. The three specimens 

 measure: Wing, 57.5-59 (58.2); tail, 27-29 (27.7); culmen, 8-9 

 (8.3) mm. 



Williamson® records specimens from Bangkok and Muaklek, but 

 whether the Bangkok record belongs here or to the Peninsular form 

 I am not able to state. Baker '° records it from Pak Chong and 

 Krabin. Kloss^* collected four females at Ok Yam. 



The form is probably confined to eastern Siam, extending into 

 Indo-China. 



Family ZOSTEROPIDAE: White-eyes 



ZOSTEROPS PALPEBROSA WILLIAMSONI Robinson and KIoss 



Zosterops palpebrosa williamsoni Robinson and Kloss, Journ. Nat. Hist, oc 

 Siam, vol. 3, p. 445, 1919 (Meklong, central Siam). 



One adult male, five immature males, and one adult female, Nakon 

 Sritamarat, September 16-24, 1926; six males and 12 females, Bang- 

 kok, March 29-April 3, 1934. 



The adults from Nakon Sritamarat agree fairly well with the series 

 from Bangkok, though the latter are more worn. Dr. Smith writes 

 that they suddenly appeared in some numbers around Bangkok for 

 a few days and then disappeared, probably one of those erratic 

 wanderings in search of food. They seem to be in worn plumage 

 like birds that had already passed through a breeding period. 



The immatures from Nakon Sritamarat are almost duplicates of 

 the adult, except in size ; all but one have a slight indication of a yellow 

 streak on the belly. 



The adult male from Nakon Sritamarat measures: Wing, 54; 

 tail, 33; culmen, 11 mm. The female: Wing, 52; tail, 32; culmen, 

 10.5 mm. Six males from Bangkok: Wing, 51-54 (52.2); tail, 

 33.5-36 (34.5); culmen, 11-11.5 (11.2) mm. Ten females from 

 Bangkok: Wing, 51-54.5 (53); tail, 32.5-35 (34); culmen, 10.5-11 

 (10.9) mm. 



The series resembles Z. p. palpebrosa but is duller and more green- 

 ish above, lighter and more whitish below. 



The form M^as first described from central Siam and in the original 

 description one was recorded from Koh Rah, Takuapa, west coast 

 of Peninsular Siam and Batu, Selangor. Robinson ^* gives it for 

 Patani; Delacour and Jabouille " record it from Cambodia, Annam, 

 Tonkin, and Laos. 



" Jouni. Nat. Hist. Soc. Siam, vol. 2, p. 213, 1917. 



"> Journ. Nat. Hist. Soc. Siam, vol. 3, p. 416, 1919. 



i> Ibis, 1915, p. 756. 



" The birds of the Malay Peninsula, vol. 1, p. 316, 1927. 



" Oiseaux I'lndochine Franpaise, vol. 4, p. 176, 1931. 



