358 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



birds in this condition have been taken between April 10 and 19, 

 while examples in postnuptial molt have been collected between Aug- 

 ust 18 and December 2. The plumage becomes badly worn from the 

 coarse vegetation, and the white portions are usually somewhat soiled 

 by mud and dust. 



An adult male had the irides dark brown ; the orbital skin slate ; the 

 bill black; the feet and toes slaty blue; the claws slaty horn. An 

 adult female differed in having the feet, toes, and claws brownish slate. 



This species has the crested crown white ; a broad black band from 

 the base of the bill, through the eye, to the posterior ear coverts, where 

 it joins a broad gray nuchal collar ; the mantle deep ferruginous, be- 

 coming rufous-brown on the rump and upper tail coverts ; the remiges 

 brown, edged with rufous; the rectrices dark olivaceous-brown; the 

 underparts white, more or less suffused with gray at the sides of the 

 breast and more or less strongly washed with rufous on the flanks ; the 

 thighs olivaceous-brown. 



I have seen no specimen from our area that shows approach to 

 G. I. helangeri. 



GARRULAX PECTORALIS MERIDIONALIS Robinson and Boden Kloss 



Tenasserimese ; Black-gorgeted Laughing-thrush 



Garrulax pectoralis meridionalis Robinson and Boden Kloss, Bull. Brit. Orn. 

 Club, vol. 40, 1919, pp. 11-12 (Hat Sanuk, near Ko Lak [Prachuap Khiri- 

 khan], southwestern Thailand). 



Garrulax pectoralis, Gyldenstolpe, Journ. Nat. Hist. Soc. Siam, 1915, p. 1(34 

 (listed) ; Kungl. Svenska Vet.-Akad. Handl., 1916, p. 54 (Khun Tan, Doi 

 Pha Sakaeng) ; Ibis, 1920, p. 487 ("Throughout northern Siam"). 



Garrulax pectoralis meridional! s, de Schauensee, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1929, p. 531 (Doi Suthep) ; 1934, p. 183 (Doi Suthep, Khun Tan, 

 Doi Chiang Dao). — Chasen and Boden Kloss, Journ. Siam Soc. Nat. Hist. 

 Suppl. 1932, p. 243 (Doi Suthep).— Riljsy, U. S. Nat. Mus. Bull. 172, 1938, p. 

 319 (San Pa Yang, Mae Suya valley, Thattafang, Mae Hong Son). 



Garrulax pectoralis meridionalis [partim], Deignan, Journ. Siam Soc. Nat. Hist. 

 Suppl., 1931, p. 136 (Doi Suthep) ; 1936, p. 105 (Doi Suthep). 



Although stated by Gyldenstolpe (1920) to be "commonly distributed 

 throughout northern Siam," the black-gorgeted laughing-thrush is, 

 in fact, restricted to the districts west of, and including, the Khun 

 Tan chain. Owing to the risk of confusion with the following species, 

 sight records are almost without value, but, to judge by specimens 

 at hand, it is almost confined to evergreen forest, at whatever altitude. 

 On Doi Suthep it has been taken between 2,700 and 5,000 feet and 

 reaches its greatest abundance at about 3,500 feet, but where there is 

 suitable vegetation it occurs also at much lower elevations. 



Outside of the difference in habitat, there is nothing in the ac- 

 count of the habits of the white-crested laughing-thrush that will not 



