342 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



shaft streaks; the remaining underparts whitish, sometimes faintly 

 sullied with pale rufous ; the under wing coverts and under tail coverts 

 dull yellow ; the under surface of the rectrices bright olive-green, like 

 the upper surface. 



MICROSCELIS VIRESCENS BINGHAMI (Hartert) 



Southern Shan Rufous-breasted Bulbul 



Iole holti binghami Habtekt, Nov. Zool., vol. 9, 1902, p. 558 (Loi San Pa, Mong 

 Kong State, Southern Shan States). 



This form of the rufous-breasted bulbul occurs within our limits only 

 on Doi Pha Horn Pok, where de Schauensee's collectors, early in 1938, 

 took three quite typical examples, in addition to a bird that is exter- 

 nally inseparable from tickelli but probably represents an aberration of 

 binghami. 



M. v. binghami differs from tickelli only in having the mantle dull 

 gray-brown instead of bright olive-green. 



MICROSCELIS VIRESCENS LOQUAX (Deignan) 



Phu Kha Rufous-breasted Bulbul 



Ixos mcclellandii loquax Deignan, Smithsonian Misc. Coll., vol. 99, No. 18, 1940, 

 pp. 2-3 (Phu Kha, Nan Province, North Thailand). 



The Phu Kha rufous-breasted bulbul is known only from the ever- 

 green of Phu Kha above 4,000 feet but will probably be found to occur 

 also on other high mountains of northern Nan Province. 



This race, like binghami, differs strikingly from tickelli in having 

 the mantle dull gray-brown instead of bright olive-green. "From 

 binghami it is separable by the slightly deeper buffy color of the under- 

 parts, by having the entire underparts (including the center of the 

 abdomen) suffused with this color, and by having the bend of the wing 

 and the under tail-coverts buffy yellow, not pale yellow" (Deignan, 

 lov. cit.). 



MICROSCELIS FLAVALA HILDEBRANDTI (Hume) 



Karen Brown-eared Bulbul 



Hemixus Hildebrandi [sic] Hume, Stray Feathers, vol. 2, 1874, p. 508 ("On the 



banks of the Younzaleen, in the Salween District of the Tenasserim Provinces, 



on the outskirts of the Pine Forest, at an elevation of about 3,000 feet"). 

 Hemixus hildebrandi, Williamson, Journ. Nat. Hist. Soc. Siam, 1918, p. 19 (Muang 



Wang). — Gyldenstolpe, Ibis, 1920, p. 492 (Muang Wang). 

 Pycnonotus hainanus, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 141 



(Doi Suthep). 

 Ixos flavala hildebrandi, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 1934, 



p. 202 (Doi Chiang Dao, Doi Suthep). — Deignan, Journ. Siam Soc. Nat. Hist. 



Suppl., 1936, p. 109 (Doi Suthep). 

 Ixos hildebrandi, Rilet, U. S. Nat. Mus. Bull. 172, 1938, p. 381 (Doi Langka, Doi 



Hua Mot, Khun Tan). 



