440 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



It is hard to believe that this species belongs in the genus Hororni^ 

 (type H. Jortipes Hodgson), but I leave it here for the present as 

 warbler genera are much involved. That it is only a form of H. 

 cantans, as some authors claim, is pushing the form group too far. 

 The latter is quite different in size and color. H. canturians is pecuhar 

 in another respect. There is a great difference in the size of the sexes, 

 the female being so much smaller than the male that it had been treated 

 formerly as a distinct species. 



The form breeds in the Lower Yangtze Valley, China, and migrates 

 to southern China and Indo-China to winter. 



H. c. borealis (Campbell) breeds in eastern Siberia, Korea, and 

 Manchuria and winters farther south. Possibly it reaches Siam. 



PHYLLERGATES CUCULLATUS THAIS Robinson and Kloss 



Phyllergates cucullatus thais Robinsox and Kloss, Journ. Federated jMalay 

 States Mus., vol. 11, pt. 1, p. 56, 1923 (Kao Luang, 5,000-5,800 feet, Nakon 

 Sritanaarat, Peninsular Siam). 



One male, Kao Luang, Nakon Sritamarat, 4,000 feet, July 20, 1928. 



Dr. W. L. Abbott collected two males and one female, Kao Nom 

 Plu, 3,000 feet, Trang, February 22-March 3, 1897. He describes 

 the soft parts: Iris dark brown; upper mandible horn brown, lower 

 mandible pale horn brown; feet pale fleshy brown. 



The above series compared with a pair of P. c. cucullatus from Java 

 have the center of the breast more broadly white and the bills smaller. 

 The culmen in the Javan male measures 16; in the female, 15 mm. 

 The culmens in the three Penmsular Siam males measure 13.5, 14^ 

 14; in the female, 13.5 mm. 



A single female of P. c. coronatus from Assam compared with P. c. 

 thais is lighter on the back, has the gray neck collar lighter and 

 narrower, the hazel of the head extending farther onto the nape, and 

 the white of the center of breast narrower. The culmen measures 

 15.5 mm. 



Robinson and Kloss " state that the bu'd occurring in the Malay 

 States agrees with that of Borneo and is P. c. cinereicollis Sharpe. 

 No specimens of the latter have been available to me for comparison. 



P. c. thais is known only from the two Peninsular Siam localities 

 cited above, but it probably occurs on some of the other mountains 

 of the Peninsula. 



SUVA SUPERCILIARIS SUPERCILIARIS Anderson 



Suya superctUaris Anderson, Proc. Zool. See. London, 1871, p. 212 (]\Iomein = 

 Tengyueh, Yunnan). 



One female, Doi Nangka, April 25, 1931; one male, Doi Hua Mot, 

 August 12, 1934. 



V " Journ. Nat. Uist. Soc. Siam, vol. 5, p. 323, 1924. 



