BIRDS FROM SIAM AND THE MALAY PENINSULA 331 



white not buITy; ear coverts not so deeply colored. I am placing this 

 specimen, however, with the type with some hesitation. The south- 

 eastern corner of Siam contains a number of forms that are not found 

 in other parts of the country and that probably extend into the 

 adjacent regions of Cambodia. Some of them are known to do so, 

 but so far as I know this part of Cambodia has not been well explored 

 biologically; the explorations of M. Delacour and colleagues did not 

 extend this far northwest. 



DRYMOCATAPHUS NIGRICAPITATUS NIGRICAPITATUS (Eyton) 



Brachypteryx nigricapitata Eyton, Proc. Zool. Soc. London, 1839, p. 103 (Malacca). 



Four females, Bangnara, Patani, May 10 and 23, 1924, and July 

 13, 1926; four adult males, one immature male, and one immature 

 female, Sichol, Bandon, August 29-September 1, 1929, and May 

 20-27, 1930; one unsexed, Kao Chong, Trang, September 2, 1933. 

 Dr. Smith describes the soft parts as: Iris reddish brown; bill black 

 above, horn below; legs light brown. 



Dr. W. L. Abbott took an adult female and an immature female 

 at Lay Song Hong, Trang, August 25, 1896; and an adult male on 

 Singapore Island, May 17, 1899. He describes the soft parts as: 

 Iris reddish brown or dark red; upper mandible black, lower mandible 

 fleshy or bluish white; feet fleshy brown. 



Three stages of plumage are represented by the immature specimens: 

 (1) An immature male, not long from the nest, with gray throat and 

 forehead and the rest of the body duller than in the adult; (2) throat 

 tawny lilce the chest, pileum fuscous, the superciliary becoming gray- 

 ish white; and (3) throat white and the rest of the plumage much as 

 in the adult. 



Robinson and Kloss '^ report it from Tasan, Chumporn, Peninsular 

 Siam and say that this is about the northern limit in the Peninsula. 

 The species occurs from Singapore northward through Peninsular 

 Siam to southern Tenasserim. 



The few specimens examined from Sumatra are darker above than 

 Peninsular birds and belong to the form named D. n. nydilampis by 

 Oberholser.^^ 



This bird is generally cited as a race of D. capistratus of Java, but 

 the latter is a distinct species in my estimation, with so many diifer- 

 ences that it is better to recognize it as such. The form found in 

 Borneo, capistratoides, evidently belongs to the same form group as 

 the Malay bird. 



" Journ. Nat. Hist. Soc. Siam, vol. 5, p. 292, 1924. 



" Smithsonian Misc. Coll., vol. 74, no. 2, p. 10, 1922 (Banks Island). 



