BIRDS FROM SIAM AND THE MALAY PENINSULA 451 



CYORNIS RUBECULOIDES DIALILAEMA Salvadori 



Ci/ornis dinlilaema Salvadori, Ann. Mus. Civ. Storia Nat. Genoa, ser. 2, vol. 7, 

 p. 387. 1889 (Taho Plateau, northern Tenasserim). 



Two males and one female, Khun Tan, 3,000-4,000 feet, February 

 18 and 23, 1932; one male, Konka Valley, January 25, 1933. 



This form is a much brighter blue than glaucicomans, and the lighter 

 blue on the forehead is more extensive. The female is similar to the 

 same sex of that form but is more olive, less rufous. 



The three males measure: Wing, 70.5-71 (70.7); culmen, 12 mm. 

 The single female: Wing, 71; culmen, 12 mm. 



The form ranges from the southern Shan States to central and 

 southern Burma and east to northern and western Siam. De Schauen- 

 see *' collected a series at Chiengmai and Chiengdao. 



CYORNIS wmTEI WHITEI Harington 



Cyornis whitei Harington, Ann. Mag. Nat. Hist., ser. 8, vol. 2, p. 245, 1908 

 (Watau, Bhamo district, Upper Burma). 



Four males, Kliun Tan, 4,000 feet, October 24-25, 1929, February 

 17 and 20, 1932; one female, Mekhan, February 8, 1932. 



The males of this species can be distinguished from the males of the 

 rubeculoides forms by the very small amount of black (or none at all) 

 on the chin ; from the tickelliae forms by the less amount of white on 

 the belly. In the whitei forms the female is olive-brown, while in the 

 tickelliae forms the female is bluish above. How to distinguish the 

 females of the whitei forms from those of the rubeculoides forms, I 

 frankly do not know. 



The four males measure: Wing, 70.5-76 (72.7); culmen, 12-13 

 (12.6) mm. 



The form ranges from Upper Assam, Upper Burma, northern Siam, 

 Yunnan, French Laos, and Tonkin to northern Tenasserim. Chasen 

 and Kloss " report it from Doi Sutep, 4,600 feet. 



CYORNIS WHITEI CAERULEIFRONS Baker 



Cyornis magniroslris caeruleifrons Baker, Bull. Brit. Orn. Club. vol. 39, p. 8, 1918 

 (Klang Bang Lai, Siam). 



Five males and two females, Kao Lem, December 26-28, 1930; 

 five males and six females, Kao Sabap, Chantabun, January 6, 7, 1930, 

 October 31-November 26, 1933. 



Dr. W. L. Abbott collected a male on Singapore Island, May 27, 

 1899 (no. 170508) that seems to belong here. It is a little duller blue 

 above but has the same rufous underparts. If it does not belong 

 here, I do not know where to place it. 



" Proc. Acad. Nat. Sci. Phladelphia, vol. 86, p. 215, 1934. 

 » Journ. Siani. Soc Nat. Uist. Suppl., vol. 8, p. 239, 1932. 



