266 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



vinaceous-cinnamon or tinged with this color, but they are all appar- 

 ently birds of the year, and this color is lost as the breeding season 

 approaches and the underparts become white from the chest down- 

 ward. Most of the birds listed above are immature and are molting. 

 The molt is not completed apparently until the birds reach the 

 breeding grounds in x\pril or later. 



Williamson ^' states that this race occurs from August to about the 

 middle of May at Bangkok and once on July 23 ; he also found it at 

 Klong-Rangsit, May 29, and observed it in fair numbers on Koh 

 Phai, July 17; Deignan ^^ writes that it is irregularly common at 

 Chiengmai from July to March. Apparently it is a common migrant 

 and winter resident all over Siam proper and the Malay Peninsula. 



The form breeds in eastern Siberia and all China and migrates 

 south in winter through the Malay Peninsula and Archipelago as far 

 as Australia; some winter as far north as southern China and Siam. 



HIRUNDO HYPERYTHRA BADIA (Cassin) 



Cecropis badia Cassin, Proc. Acad. Nat. Sci. Philadelphia, vol. 6, p. 371, 1853 

 (Malacca). 

 One male and two females, Kao Soi Dao, Trang, January 4-18, 



1934. 



Dr. W. L. Abbott took two males at Prahmon, Trang, March 21, 

 22, 1896. He gives the bill and feet as black and iris dark brown. 



Ogilvie-Grant *^ records it from Patani; Robinson and Kloss say ^* 

 that it is found only in the neighborhood of precipitous hills and 

 cliffs; Robinson ^^ records it as common at Bankok Klap, Bandon, 

 and later ^° from Langkawi and Terutau ; Robinson and Kloss from 

 Nongkok, Ghirbi, ^^ and Ronpibun, Nakon Sritamarat.^^ 



Robinson ^^ says that this handsome swallow is associated chiefly 

 with the precipitous limestone hills and quartzite ridges, which occur 

 throughout the Malay Peninsula, but cease at Kuala Lumpur. It 

 used to breed near the Klang Gates and Batu Caves near the above 

 city in May and June, and in the caves of the Patani States at the 

 end of June and in July. 



The form ranges from the state of Selangor northward in the 

 Malay Peninsula to about Bandon or a little farther. 



A smaller and duller-colored form, H. h. hypenjthra, is confined to 

 Ceylon. 



M Journ. Nat. Hist. Soc. Siain, vol. 2, p. 199, 1917. 



•• Journ. Siam Soc. Nat. Uist. Suppl., vol. 8, p. 153, 1931. 



fi Fasciculi Malayenses, pt. 3, p. 95, 1905. 



M Ibis, 1911. p. 50. 



M Journ. Federated Malay States Mus., vol. 5, p. 98, 1915. 



w Journ. Federated Malay States Mus., vol. 7, p. 166, 1917. 



•I Journ. Nat. Uist. Soc. Siam, vol. 3, p. 103, 1919. 



M Journ. Federated Malay States Mus., vol. 11, p. 60, 1923. 



M The birds of the Malay Peninsula, vol. 1, p. 174, 1927. 



