324 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



Chasen and Kloss ^° record three males from the Raheng district, 

 western Siam, as P. olivaceus olivacevs. Two of these specimens were 

 afterward sent to the United States National Museum. They are 

 slightly darker and more russet above and on the tails than northern 

 Siamese specimens, but in my opinion they are not fully adult, and 

 this may account for the difference in color. On the other hand, an 

 immature even younger taken at Khun Tan does not differ from the 

 adult except in size. It would hardly seem possible that the Raheng 

 district would have nvchalis occur to the north and south of it. They 

 also record ^"^ olivacevs from Doi Sutep and discredit rvpponi as a 

 Siamese bird. In the latter contention they are probably right. 



P. s. nuchalis ranges from northern Tenasserim to western and 

 northern Siam. 



POMATORHINUS SCHISTICEPS OLIVACEUS BIyth 



Pomatorhinus olivaceus Blyth, Journ. Asiat. Soc. Bengal, vol. 16, p. 451, 1847 

 (Y6, Tenasserim). 



Two males, Muang Kanburi, September 19, 1929, April 8, 1928; 

 one male, Bo Ploi, Kanburi, September 26, 1926. 



These three specimens have longer and heavier bills than nuchalis, 

 and there is no trace of a bay wash on the sides of the breast. At 

 apparently the same locality Dr. Smith also took P. s. nuchalis. 

 This I cannot understand, unless one is the resident form and the 

 other only a wanderer. 



This form evidently is confined to central Tenasserim and western 

 Siam, but just what its exact range is is not known. De Schauensee*' 

 secured a pair at Tamuang, March 8. 



POMATORHINUS SCHISTICEPS FASTIDIOSUS Hartert 



Pomatorhinus schisticeps fastidiosus Hartert, Bull. Brit. Orn. Club, vol. 36, p. 

 1916 (Ko-khau, Trang, Peninsular Siam). 



Dr. W. L. Abbott collected the following: Two males, Kao Nom 

 Plu, 3,000 feet, March 3, 1897; one male, Kao Nok Ram, 3,000 feet, 

 January 16, 1899; two males, Kao Soi Dao, 2,500 feet, February 12, 

 1899, all three localities in Trang. One male from Telok Ivrang, 

 February 17, and a female from Meliwun, March 7, 1904, taken in 

 Tenasserim by Dr. W. L. Abbott, cannot be distinguished from the 

 three males from Trang. The female from Meliwun is very worn 

 and much lighter, but this is natural. P. s. olivaceus must range in 

 Tenasserim farther to the north. 



w Journ. Siam Soc. Nat. Hist. Suppl., vol. 7, p. 170, 1928. 

 M Journ. Siam Soc. Nat. ni.st. Suppl., vol. 8. p. 2-14, 1932. 

 •' Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 186, 1934. 



