384 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



MOLPASTES CAFER KLOSSI Gyldenstolpo 



Molpastes atricapillus klossi Glydenstolpe, Bull. Brit. Orn. Club, vol. 41, p. 12, 

 1920 (Koon Tan, northern Siam). 



One female, Chiengmai, November 26, 1928; one male, Doi Angka, 

 3,000 feet, December 7, 1928; one male, Khun Tan Mountains, 2,000 

 feet, November 2, 1928; one male, one female, and one unsexed, Khun 

 Tan, October 20, 1929, and September 3, 1930; one female, Mae Hong 

 Sorn, January 7, 1933; one male and one female, Pak Chong, February 

 7, 1925, and April 29, 1926; one female, Nong Mong, Aluang Krabin, 

 August 21, 1925; one female, Bua Yai, February 15, 1929. 



The small series from northern Siam compared with an equally 

 small series from China {chrysorrhoides) averages grayer, less brown 

 above, and the tails above are a deeper less brownish black. The 

 Chinese form is somewhat larger also. 



The four birds from eastern Siam are brown above like chrysorrhoides 

 but smaller even than northern Siamese specimens. They are inter- 

 mediate in size but come nearer klossi, and so are placed here for the 

 present. 



Two males, one female, and four unsexed from China measure: 

 Wing, 91-102 (96.2); culmen, 17-18 (17.4) mm. Three males and 

 three females, northern Siam: Wing, 88-95 (91.3); culmen, 15.5-17 

 (16.1) mm. One male and three females, eastern and southeastern 

 Siam: Wing, 84-90 (86.5); culmen, 15-17.5 (16.4) mm. 



This form evidently ranges from northern Siam to eastern, south- 

 eastern, and western Siam and eastern Tenasserim. 



De Schauensee ^ reports it from Chiengmai, Doi Sutep, 4,500 feet, 

 Chiengrai, and Chiengsen. He says in northern Siam it is a rare and 

 local bulbul; on his third expedition ^* he secured specimens at Nakon 

 Nayok, Metang, Khun Tan, Chiengdao, Sriracha, and Chiengmai; 

 Chasen and Kloss ^ record it from the Kaheng district of western 

 Siam, and three specimens from this collection are now in the United 

 States National Museum. Robinson and Kloss **' say that W. J. F. 

 Williamson obtained a series from Sriracha on the eastern side of the 

 Inner Gulf of Siam. 



XANTHIXUS FLAVESCENS VIVIDUS Baker 



Xanthiscus flavescens vivida Baker, Bull. Brit. Orn. Club, vol. 38, p. 16, 1917 

 (Salwin District, Tenasserim). 



Three males and three females, Khun Tan, 4,000 feet, November 20, 

 1928, February 22-March 4, 1932; one male, Doi Angka, December 3, 

 1928; one male and one female, Doi Nangka, April 26, 27, 1931 ; three 



M Proc. Acad. Nat. Sci. Philadelphia, vol. 81, p. 540, 1930. 

 M Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 205, 1934. 

 M Journ. Siam Soc. Nat. Hist. Suppl., vol. 7, p. 175, 1928. 

 " Journ. Nat. Hist. Soc. Siam, vol. 6, p. 277, 1924. 



