432 BULLETIN 18 6, UNITED STATES NATIONAL MUSEUM 



nest is very unthrushlike in appearance. The outside diameter of 

 the nest is 8 inches; the egg cavity 4 inches wide and about 1 inch 

 deep." 



A male from Doi Ang Ka had the irides dark brown ; the maxilla 

 blackish brown ; the mandible yellowish horn, dark at the tip ; the in- 

 terior of the mouth yellow ; the feet and toes horny yellow ; the claws 

 pale horny. 



The present species somewhat resembles Z. dixoni but may at once be 

 known by its having all the feathers of the upperparts with conspic- 

 uous, crescentic black tips, instead of uniform olivaceous-brown. 



I have already shown ( Journ. Siam Soc. Nat. Hist. Suppl., 1938, pp. 

 119-122) that, in our provinces, Zo other a daurna may have either 12 

 or 14 rectrices ; examination of 18 Thai specimens has indicated that 

 those with 12 are a little more than twice as frequent as those with 14 

 and that none is separable from Himalayan birds by color characters. 



It is well known that the general color of the upperparts in this 

 species becomes duller and grayer with wear and Eiley's recognition of 

 no less than three races among the seven examples collected by Smith is 

 due to failure to allow for such seasonal variation. I believe that 

 Zoothera dauma soda (Thayer and Bangs) will likewise prove to be 

 nothing but Zd. dauma in fine, fresh plumage ; the type specimen was 

 taken September 28. If eastern birds prove to be indeed separable 

 from those of Kashmir, Thayer and Bangs's name will, of course, take 

 precedence over Gyldenstolpe's angustirostris. 



ZOOTHERA DAUMA AUREA (Holandre) 



Japanese Lunulated-backed Mountain Thrush 



Turdus aureus Holandre, Fauna du Departement de la Moselle . . . Les Oiseaux, 

 in Annuaire de la Moselle, 1825, p. 60 [in reprint, pp. 11-12] ("& quelques 

 lieues de Metz, dans les bois de Rezonville" [a straggler]). 



Oreocincla aurea aurea [partim], de Schauensee, Proc. Acad. Nat. Sei. Philadel- 

 phia, 1934, p. 211 (Khun Tan). 



Oreocincla aurea aurea, Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, p. 113 

 (Chiang Mai). 



The present race seems to be a very rare winter visitor to northern 

 Thailand, where it has been found only four times : De Schauensee took 

 a female at Khun Tan, January 2, 1933 ; at Chiang Mai, I collected a 

 female, January 12, 1936, and a male, March 7, 1936 ; on Doi Pha Horn 

 Pok, de Schauensee's men shot a female, February 8, 1938, at 6,400 feet. 



In view of the habitat of our resident form of the species, it is note- 

 worthy that my female was shot in a city garden, where it was feeding 

 in the open on a newly spaded flowerbed, while the male was discovered 

 in dry, deciduous jungle on the plain a few miles northeast of the town. 



Z. d. aurea seems always to possess 14 rectrices. From the preceding 



