THE BIRDS OF NORTHERN THAILAND 377 



Suppl., 1936, p. 107 (Doi Suthep).— Riley, U. S. Nat. Mus. Bull. 172, 1938, 

 p. 351 (Doi Ang Ka, Doi Khun Tan, Doi Langka, Doi Hua Mot). 

 Aleippe fratercula fratercula, Gkeenway, Bull. Mus. Comp. Zool., 1940, p. 172 

 (Doi Ang Ka, Doi Nang Kaeo). 



The red-eyed quaker babbler is very common or even abundant on 

 all the higher peaks, including Phu Kha, ranging through the ever- 

 green from 3,500 to 8,000 feet. 



The large flocks of this fearless bird, usually accompanied by other 

 small babblers and, sometimes, by bulbuls, nuthatches, and tits as well, 

 swarm through the undergrowth and lower trees with a continual 

 conversational chatter. It frequently follows the forest tracks and, 

 thanks to its consuming curiosity, is one of the most easily observed 

 members of the family. 



A specimen with the gonads enlarged was taken on Phu Kha, April 

 13. I collected juveniles, April 16 and May 2, and adults in postnuptial 

 molt between July 14 and November 28. 



An adult male had the irides red-brown ; the bill horny brown ; the 

 feet, toes, and claws horny brown. De Schauensee's birds had the irides 

 red; the bill gray, tinged pink at the base of the mandible; the 

 feet, toes, and claws fleshy brown or fleshy yellow. 



This form, in fresh plumage, has the crown, nape, uppermost back, 

 and sides of the head and neck sooty gray, with a more or less dis- 

 tinct dull black streak from above each eye to the upper back; the 

 remaining upperparts olivaceous-brown; a ring of grayish-white 

 feathers around the eye (obvious in life) ; the entire underparts buff. 



I follow Mayr (Ibis, 1941, p. 73) in the assumption that Rippon's 

 fratercula is the rather larger, more northern race, in which case the 

 name laotiana becomes available for the birds of our area. 



CHRYSOMMA SINENSE SINENSE (Gmelin) 



Chinese Yellow-eyed Babbler 



IParus] sinensis Gmelin, Systema naturae, vol. 1, pt. 2, 17S9, p. 1012 (China; 



cype locality restricted to Kwangtung, by Stresemann and Heinrich, Mitt. 



Zool. Mus. Berlin, vol. 24, 1940, p. 205). 

 Pyctoris sinensis major, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 



1928, p. 566 (Chiang Mai). 

 Chrysomma si?w7isis sinensis, Deignan, Journ. Siam. Soc. Nat. Hist. Suppl., 



1931, p. 136 (Chiang Mai) ; 1936, p. 106 (Chiang Mai). 

 Chrysomma sinensis major, de Schauensee. Proc. Acad. Nat. Sci. Philadelphia, 



1934, p. 1S8 (Chiang Mai). 



This babbler has been found only at Muang Fang and Chiang Mai 

 and on Doi Ang Ka at about 4,300 feet (in the brush of the cleared 

 valley below Pha Mon). 



At Chiang Mai and Muang Fang I met with it in parties of as 

 many as a dozen individuals, in exactly the same places as, and almost 

 always in company with, the commoner Timalia p. intermedia. 



