424 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



ORTHOTOMUS ATROGULARIS ATROGULARIS Temminck 



Orthotomus atrogularis Temminck, Nouvcau recueil de planches colorizes d'oiseaux, 

 livr. 101, in text to pi. 599, 1836 (Malacca and Borneo). 



One male, Bangnara, Patani, July 19, 1926; one male, Bukit, Patani, 

 January 23, 1931; one male, Huey Yang, Nakon Sritamarat, October 

 1, 1930; one male and one female, Tlia Lo, Bandon, September 27, 

 1931 ; seven males and one female, Pran, May 29, 1928, April 1, 3, 1931. 



Dr. W. L. Abbott collected the following: Four males and three 

 females, Trang (Prahmon, February 21-March 27, 1896; Trang, 

 February 2, 1897; Kok Sai, December 28-29, 1898) ; two males and two 

 females, Singapore Island, May 14-25, 1899; and one male. Heifer 

 Island, Mergui Archipelago, March 5, 1900. He took a nest and three 

 heavily incubated eggs in Trang May 29, 1896. He gives the soft 

 parts as: Iris pale yello\\'ish brown; upper mandible horn brown, 

 lower mandible pale fleshy; feet brownish fleshy. 



This series averages a darker green above than a series from eastern 

 Siam and the pileum averages darker also, but the lower parts are not 

 grayer. There seems to be no great difference in size between the two 

 series. Ten adult males from the Malay Peninsula north to Pran 

 measure: Wing, 43-48.5 (45); tail, 33-39 (35.9); culmen, 14.5-15.5 

 (15) mm. Ten adult males from central and eastern Siam: Wing, 

 42.5-45.5 (43.7); tail, 31-39 (36); culmen 13.5-15 (14.3) mm. 



The largest specimens in the above series are from the south, and 

 there is a gradual diminution northward. The specimens from Pran 

 are intermediate but in color seem more nearly to match the southern 

 form. Unfortunately, I have no adult specimens from southern Siam. 

 It is quite possible that the specimens from central, southeastern, and 

 eastern Siam are only intermediates and should really be placed with 

 the Peninsular form. 



0. a. atrogularis ranges from Singapore northward to Pran, south- 

 western Siam, and southern Tenasserira. It occurs throughout the 

 Malay Peninsula, and has been recorded on Pulo Dayang Bunting, Pulo 

 Langkawi, and Pulo Terutau,^^ Koh Samui, and Koh Pennan^^ by 

 Robinson. 



ORTHOTOMUS ATROGULARIS NITIDUS Hume 



Orthotomus nitidus Hume, Stray Feathers, vol. 2, pp. 478, 507, 1874 (northern 

 Tenasserim) , 



Two males, Muang Kanburi, April 8, 11, 1928; two males and a 

 female, Bangkok, April 8, 1924, June 1, 2, 1926; two males, Aranya, 

 July 12, 13, 1930; one male immature, Chiengdao, January 28, 1932; 

 one male, Muang Pai, December 27, 1932; four males and one female, 

 Pak Chong, May 8, 11, 1925, November 22, 29, 1929; one female, 

 Lam Klong Lang, Pak Chong, June 15, 1925; one male, Hin Lap, 



« Journ. Federated Malay States Mus., vol. 7, p. 182, 1917. 

 ♦• Journ. Federated Malay States Mus., vol. 6, p. 150, 1916. 



