322 BULLETIN 18 6, UNITED STATES NATIONAL MUSEUM 



rectrices narrowly tipped and edged along the inner web with pale 

 greenish yellow ; the lores, eye ring, ear coverts, and the entire under- 

 parts bright yellow ; the under wing coverts and the elongated, silky 

 feathers of the lower flanks white. The female differs in having the 

 yellow underparts duller and suffused with green, especially along 

 the sides of the body. 



AEGITHINA TIPHIA TIPHIA (Linnaeus) 



Bengalese Small Iora 



[Motacilla] Tiphia Linnaeus, Systema naturae, ed. 10, vol. 1, 1758, p. 186 

 (Bengal, ex Edwards; type locality restricted to "the neighbourhood of 

 Calcutta," ex Latham, by Hume, Stray Feathers, vol. 5, 1877, p. 431). 



Aegithina tiphia, Gyldenstolpe, Kuugl. Svenska Vet.-Akad. Handl., 1913, p. 23 

 (Phrae) ; 1916, p. 63 (Khun Tan, Pang Hua Phong). 



AEegithina tiphia, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, p. 166 

 (listed). 



AEgithina tiphia tiphia [partim], Gyldenstolpe, Ibis, 1920, p. 489 ("Through- 

 out Siam" [partim]). 



Aegithina tiphia tiphia, de Schatjensee, Proc. Acad. Nat. Sci. Philadelphia, 

 1928, p. 567 (Chiang Mai). — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 

 1931, p. 139 (Chiang Mai) ; 1936, p. 108 (Chiang Mai, Doi Suthep). 



Aegithina, tiphia tiphia [partim], de Schatjensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1934, p. 199 (Chiang Dao, Chiang Mai).— Riley, U. S. Nat. Mus. 

 Bull. 172, 1938, p. 366 (Doi Ang Ka, Chiang Mai, Phrae, Nan, Ban Nam 

 Khian). 



This race of the common iora is abundant in the lowlands of all 

 our provinces (except Chiang Rai, where it is replaced by the fol- 

 lowing form) and may also be seen on the mountains in small num- 

 bers in the second growth that follows hill-cultivation (on Doi 

 Suthep ascending to 3,800 feet, on Doi Chiang Dao, to about 4,500). 



The nok khamin is one of the most familiar birds of the northern 

 towns and villages, occurring, in pairs or small parties, in every garden 

 and in the shade trees bordering the streets. It attracts attention both 

 by its bright colors and by its sweet, whistled whee-e-e-e-ter' (with the 

 last note an octave lower), one of the characteristic sounds of the 

 rainy season. 



The breeding period seems to cover a number of months, for I have 

 taken examples with greatly enlarged gonads as early as May 28 and 

 as late as July 13. A series of males in prenuptial molt were collected 

 between March 20 and April 18 ; another series, in postnuptial molt, 

 between July 6 and November 3; odd specimens of the same dates, 

 however, were not molting at all. 



An adult male had the irides pale gray ; the bill plumbeous, with the 

 culmen black ; the feet and toes plumbeous. 



The male, in nuptial dress, has the upperparts dull green (very 

 rarely, in our provinces, with some feathers of the mantle tipped 



