NO. 3 AVIAN GENUS PRINIA DEIGNAN 9 



of summer, thus approaching the very strong-billed Pr. fl. rafflesi, 

 which shows no seasonal variation at all in length of tail. I propose 

 to name this form 



PRINIA FLAVIVENTRIS DELACOURI, new subspecies 



Type. — Adult male, P.M.Z. No. 10301, collected at Chiengmai, 

 1,000 feet, North Siam, January 30, 1932, by H. G. Deignan. 



The races now known from the Indo-Chinese countries, exclusive 

 of Burma, are : 



1. PRINIA FLAVIVENTRIS SONITANS Swinhoe 



Prinia sonitans Swinhoe, Ibis, i860, p. 50 (Amoy). 

 Range. — In Indo-China: NE. Tongking. 



2. PRINIA FLAVIVENTRIS DELACOURI Deignan 



Range. — Pegu, Siam, and all Indochine, except those areas in- 

 habited by sonitans and rafflesi. 



3. PRINIA FLAVIVENTRIS RAFFLESI Tweeddale 



■ Prinia rafflesi Tweeddale, Ibis, 1877, p. 311, pi. 6, fig. i (Lampongs, South 

 • Sumatra). 



Range. — In Indo-China : Peninsular Siam, south of the Isthmus 

 of Kra. 



V 



Since, as mentioned in my introduction, the southernmost race of 

 Suya crinigera auctorum (type of the genus Suya) is clearly only 

 subspecifically distinct from M alums polychrous Temminck 1828 

 (Java), polychroa must take precedence over crinigera 1836 as the 

 oldest name for the species. 



The recognizable races of Prinia polychroa are seven or eight, de- 

 pending on whether Suya parnmstriata David and Oustalet (Fukhien) 

 is distinct from the Formosan Prinia striata Swinhoe, which I have 

 not seen. 



I. PRINIA POLYCHROA STRIATULA (Hume) 



Blanjordius striatula Hume, Stray Feathers, vol. i, p. IQS, 1872 [nomen nudum] ; 

 ibid., vol. 2, p. 300, 1873 (Karachi). 



2. PRINIA POLYCHROA CRINIGERA (Hodgson) 



Suya crinigera Hodgson, Asiat. Res., vol. 19, p. 183, 1836 (Nepal). 



