564 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 

 PLOCEUS MANYAR PEGUENSIS Stuart Baker 



Indo-Chinese Striated Weaverbird 



Ploceus manyar pcgucnsis Stuart Bakee, Bull. Brit. Orn. Club, vol. 45, 1924, p. 



58 (Pegu). 

 ploceus manyar flaviceps, Gvldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 



1916, p. 29 (Chiang Bai) ; Ibis, 1920, p. 455 (Chiang Rai) . 



The striated weaverbird is very common on the grassy plains of 

 Chiang Eai Province but is known from no other part of our area. 



At Ban Ton Yang, a village near Chiang Kai Town, May 5, 1936, I 

 saw numerous bands of this bird feeding in the r icefields and resting 

 in the bamboos nearby. The common baya occurred at the same place 

 in even greater numbers and, at this season, the flocks of the two closely 

 related species were not intermingled. I found peguensis very wild, 

 and my sole specimen, a male in late prenuptial molt, had to be taken 

 by a chance shot from a great distance. 



The example of May 5 had the gonads enlarged. Gyldenstolpe 

 (1916) tells of seeing numbers of nests under construction about 

 Chiang Rai at the beginning of August 1914, placed in tall elephant 

 grass and in low trees; up to August 18, when he finally departed 

 from this locality, he had found no sign of eggs. 



The nuptial male differs from that of P. p. burmanicus by having 

 the streaked upperparts generally darker, owing to the broader and 

 blacker central markings of the feathers; the rump and upper tail 

 coverts like the mantle but with the central streaks less distinct and 

 the rufous-buff edgings broader; the underparts, below the blackish- 

 brown chin and throat, pale rufous-buff, the feathers of the upper 

 breast with broad, lanceolate blackish-brown central streaks that be- 

 come narrower on the lower breast and continue down the whole 

 length of the flanks finally to become narrow shaft streaks. The female 

 at any season and the nonbreeding male may be distinguished from 

 those of the commoner species by their darker upperparts, paler under- 

 parts, and streaked breast and flanks. 



Family FRINGILLIDAE 



MYCEROBAS MELANOZANTHOS FRATRIS-REGIS Deignan 



Indo-Chinese Spotted-winged Grosbeak 



Mycerobas melanozanthos fratris-regis Deignan, Auk, vol. 60, 1943, p. 608 (Doi 



Suthep, Chiang Mai Province, northwestern Thailand). 

 Mycerobas melanozanthus, de Schatjensee, Proc. Acad. Nat. Sci. Philadelphia, 



1934, p. 4 (Doi Suthep). 

 Mycerobas melanozanthos, de Schatjensee, Proc. Acad. Nat. Sci. Philadelphia, 



1934, p. 236 (Doi Suthep).— Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, 



p. 127 (Doi Suthep). 



