484 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



Peninsular Siamese specimens apparently do not differ in size or 

 color from those from the northern part of Si am. 



In northern Siam and extending into Burma, Assam, and Yunnan, a 

 bro\^Ti-backed bird occurs along with black-backed specimens. De 

 Schauensee ^° states that he found black-backed and brown-backed 

 birds in the same flocks and is of the opinion that the latter is only a 

 color phase of the former. I am inclined to the same opinion, except 

 the brown-backed birds seem to be found only in the northern part 

 of Siam northward. 



Ten males of H. incaius from northern and eastern Siam measure: 

 Wing, 62-64 (63.5); tail, 56-61 (57.5); culmen, 11.5-13 (12.2) mm. 

 Three males from Peninsular Siam: Wing, 61-63 (61.8); tail, 53.5-58 

 (55); culmen, 12, 13 (12.3). 



This species has a wide range, embracing practically all India, 

 Burma, Assam, Yunnan, Siam, Indo-China, the Malay Peninsula, 

 Sumatra, and Borneo. In Peninsular Siam it apparently is not so 

 common as it is farther north in Siam proper. 



HEMIPUS HIRUNDINACEUS (Temminck) 



Muscicapa hirundinacea Temminck, Nouveau recueil de planches colorizes 



d'oiseaux, livr. 20, pi. 119, figs. 1, 2, 1822 (Java). 

 Muscicapa obscura Horsfield, Trans. Linn. Soc. London, vol. 13, p. 146, 1821 



(Java); not of Gnielin, 1789. 



One male, Yala, Patani, January 29, 1931. 



Dr. W. L. Abbott collected a female at Packa, Trengganu, Sep- 

 tember 27, 1900. 



The series of males of this species at my disposal is too small to 

 enable me to reach any definite conclusions as to any geographic varia- 

 tions it might be subject to. The Patani male has almost no white 

 edging to the outer web of the outer tail feather. 



This species has a wide range, occurring from Borneo, Java, Billiton, 

 Sumatra, and the Malay States north through Peninsular Siam to 

 Tenasserim. In Peninsular Siam it evidently is a rare bird, as I have 

 seen only one previous record, that of Williamson ^^ for Bangnara, 

 Patani; his record from Paknam, Chumporn, belongs to H. picatus, 

 according to Robinson and Kloss." 



MUSCITREA GRISOLA GRISOLA (BIyth) 



Tephrodornis grisola Bltth, Journ. Asiat. Soc. Bengal, vol. 12, p. 180, 1843 (near 

 Calcutta) . 



One male, Bangnara, Patani, July 14, 1926; one male, Singora, 

 July 2, 1929; two males and two females, Nakon Sritamarat, Septem- 

 ber 18-26, 1926 ; four males and three females, Koh Tao, December 29, 



M Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 222, 1934. 

 •1 Journ. Nat. Hist. Soc. Siam. vol. 3, p. 20, 1918. 

 •• Journ. Nat. Hist. Soc. Siam, vol. 5, p. 329, 1924. 



