356 BULLETIlSr 17 2, UNITED STATES NATIONAL MUSEUM 



In Peninsular Siam there are few records. This may be more 

 apparent than real, as Dr. Abbott in his notes says that it keeps near 

 the ground in dense underbrush in the forest. It is a short-tailed, 

 dull-colored, long-legged bird and evidently spends most of its time 

 on the ground and is easily overlooked. In the Malay States it is 

 probably more abundant. 



Several closely related forms have been named from Sumatra and 

 from islands off the west coast of that island. A darker, more richly 

 colored form is found in Borneo. 



PSEUDOMINLA CASTANECEPS CASTANECEPS (Hodgson) 



Minla castaneceps Hodgson, Indian Rev., vol. 2, p. 33, 1838 (Nepal). 



Two males, Doi Angka, 8,000 feet, December 5, 1928; six males 

 and two females, Doi Nangka, November 10-12, 1930, April 22-24, 

 1931 ; one male, Doi Hua Mot, August 17, 1934. 



The only specimen of castaneceps from India with which the above 

 series has been compared has a lighter-brown pileum, and the brown 

 patch at the base of the inner primaries is much lighter also. 



The form extends from Sikkim east to Assam north of the Brah- 

 maputra, Burma, south to Tenasserim, and northern Siam, and 

 northwest Tonkin. 



Lowe ^^ took one 50 miles southeast of Umpang; de Schauensee " 

 secured one at Chiengmai, 5,500 feet. 



In the mountains of the Federated Malay States P. c. soror (Sharpe) 

 occurs. This form may occur also on some of the mountains of 

 Peninsular Siam. It is said to differ from typical castaneceps in its 

 larger size, darker olive-brown upper side, and deeper and more 

 chestnut edging to the quills. 



HETEROPHASIA PICAOIDES CANA (Riley) 



Sibia picaoides carta Riley, Proc. Biol. Soc. Washington, vol. 42, p. 166, 1929 



(Doi Angka, Siam). 

 Heterophasia picaoides burmanica Ticehurst, Bull. Brit. Orn. Club. vol. 55, 



p. 19, 1935 (Taok Plateau, Burma). 



Two males and one female, Doi Angka, 5,000-7,500 feet, Decem- 

 ber 4 and 6, 1928; one male and one female, Doi Sutep, 5,500 feet, 

 December 15, 1928; two males and one female, Doi Nangka, Novem- 

 ber 12, 1930, and April 25-26, 1930; two males and one female. Pang 

 Meton (Doi Nangka), May 1-3, 1931; one male, Doi Ilua Mot, 

 August 27, 1934. 



This was originally described as "similar to Sibia picaoides pica- 

 oides, but a clearer, purer, and less brownish gray, especially below; 

 the bill smaller." These differences hold with the larger series before 

 me. 



" Ibis, 1933. p. 266. 



n Free. Acad. Nat. Sci. Philadelphia, vol. 86. p. 194, 1934. 



