BIRDS FROM SIAM AND THE MALAY PENINSULA 245 



culmen, 12-13 (12.6) mm. Three females from Peninsular Siam: 

 Wing, 51-54 (52.7); tail, 19-22 (20.7); culmen, 12.5-13 (12.7) mm. 

 One female from Borneo: Wing, 51.5; taU, 21; culmen, 13 mm. 



No specimens from Java have been examined, but cle Schauensee ^ 

 claims that Peninsular birds have larger bills. He had only one 

 specimen from Java, one from the Peninsula, and three from Borneo. 

 He is correct in stating that Bornean and Peninsular birds are the 

 same, and presumably he is correct as to the Javan form also. A 

 larger series from Java should be examined, however. 



The range of this form extends from Borneo and Sumatra to the 

 Malay States and northward through Peninsular Siam to Maprit, 

 southwestern Siam, and southern Tenasserim. 



This bird is probably not uncommon, but as it mostly inhabits 

 bamboo tliickets it is probably hard to observe, and it is not common 

 in collections. It has been taken the full length of the Peninsula. 



Sasia abnormis abnormis (Temminck) is confined to Java. 



JYNX TORQUILLA JAPONICA Bonaparte 



Junx japonica Bonaparte, Conspectus generum avium, vol. 1, p. 112, 1850 

 (Japan). 



One female. Bung Borapet, March 29, 1933. 



This form ranges from Japan west to central Asia and south to 

 northern India. In winter it migrates to southern China, Tonkin, 

 Annam, Cochinchina, Siam, Burma, and the greater part of eastern 

 India. 



Several nominal races have been proposed for J. torquilla in recent 

 years: 



lynx torquilla chinensis Hesse, Orn. Monatsb., 1911, p. 181 (Tsintau, 



China). 

 Jynx torquilla harterli Poljakow, Mess. Orn., 1915, p. 135, 136 (Altai,. 



Jenissei Government). 

 Jynx torquilla pallidior Rensch, Abh. Ber. Zool. Mus. Dresden, vol. 16, 



no. 2, p. 40, 1924 (Sungpan, Szechwan). 

 Jynx torquilla intermedia Stegmann, Bull. Brit. Orn. Club, vol. 47, p. 73, 



1927 (Tchita, southeastern Siberia). 



Adequate material is not available to investigate the validity of 

 these forms at present, but I do not believe they can be maintained. 

 It is too difficult to discriminate the eastern from the western form 

 without complicating matters any further. 



This bird is a rather rare winter visitor to Siam. Williamson ' 

 recorded a male from Bangkok, April 24, 1916. De Schauensee* 

 lists a female from Chiengmai, January 5 ; Deignan ^ records it from 



» Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 253, 1934. 

 » Journ. Nat. Hist. Soc. Siam, vol. 2, p. 324, 1917. 



* Proc. Acad. Nat. Sci. Philadelphia, vol. 81, p. 568, 1930. 



• Journ. Siam. Soc. Nat. Hist. Suppl., vol. 8, p. 158, 1931. 



