12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



PRINIA FLAVIVENTRIS CHASENI, new name 



Three well-defined forms of Priuia afrogularis occur within Indo- 

 Chinese limits. 



1. PRINIA ATROGULARIS SUPERCILIARIS (Anderson) 



Saya [sic] sufycrciliaris Anderson, Proc. Zool. Soc. London, 1871, pp. 212-213 

 (Moniien [^Tengyueh], Yunnan). 



Range. — Northern Burma, Yunnan, Kwangtung, Fukhien, Tong- 

 king. 



2. PRINIA ATROGULARIS ERYTHROPLEURA (Walden) 



Siiya erythroplcura Walden, in Blyth, Cat. Mamm. Birds Burma, Journ. Asiat. 

 Soc. Bengal, vol. 43, pt. 2, extra No., p. 116, 1875 (Toungoo, Burma). 



A series of five summer and eight winter birds from northern Siam 

 and the adjacent parts of Laos ditTer from superciliaris in having the 

 upper parts, throughout the year, more olivaceous brown, much less 

 rufescent brown; the under parts, in winter, with less rufescence and 

 that of a paler hue ; the tail shorter than that of superciliaris at the 

 same season and showing less seasonal variation in length than appears 

 in the more northern race. 



No topotype of erythroplcura has been seen and the name is here 

 applied to the Siamese population on the assumption that all birds of 

 the same latitudes are likely, in this species, to be the same. If 

 erythroplcura be synonymous with superciliaris, the series before me 

 is without an available name. 



3. PRINIA ATROGULARIS KLOSSI (Hachisuka) 



Suya superciliaris klossi Hachisuka, Bull. Brit. Orn. Club, vol. 47, p. 53, 1926 

 (Dalat, South Annam). 



Range. — Cochinchine, South Annam, Low Laos (Bolovens 

 plateau ) . 



In the Malaysian subregion appear also the two following forms : 



I. PRINIA ATROGULARIS WATERSTRADTI (Hartert) 



Suya ivaterstradti Hartert, Nov. Zool., vol. 9, p. 568, 1902 (Gunong Tahan, 

 Malay Peninsula). 



2. PRINIA ATROGULARIS ALBOGULARIS (Hume) 



Suya albogularis Hume, Stray Feathers, vol. i, p. 459, 1873 (Acheen, Sumatra). 



The type of Burnesia dysancrita Oberholser, which lies before me, 

 shows that this name is a complete synonym of Hume's albogularis. 



