BIRDS FROM SIAM AND THE MALAY PENINSULA 521 



Nakon Sritamarat, by Robinson and Kloss;* and by de Schauensee 

 from the same state. ^ Baker ^ lists it from Klong Wan Hip. 



PIPRISOMA MODESTA MODESTA (Hume) 



Prionochilus rnodestus Hume, Stray Feathers, vol. 3, p. 298, 1875 (southern 

 Tenasserim). 



Dr. W. L. Abbott took three males and one female in Trang, 

 December 29, 1898, and January 3, 1899. He gives the color of the 

 soft parts as: Iris pale yellowish brown; bill leaden at base, black at 

 tip; feet black. 



Tiie only specimen available for comparison outside of vSiam is a 

 female from southern Sylhet, Assam. It is more dull citrine above 

 rather than the saccardo olive of the Peninsular specimens and has 

 fewer and fainter streaks below. It is certainly not the same as the 

 Peninsular bird. 



The two males and one female from Trang measure: Wing, 55-63 

 (59.2); tail, 25.5-32 (29); culmen, 8.5-9 (8.7) mm. The single female 

 from Assam: Wing, 56.5; tail, 25; culmen, 8 mm. 



Just what range the present form has is not definitely known. I 

 believe it is confined to northern Siam, southern Tenasserim, and 

 south through Peninsular Siam to the northern Malay States. 



Gjddenstolpe ^ took a single male at Khun Tan, May 17, 1914, but 

 whether it should be placed with the Peninsular form, the eastern form, 

 or belongs to another race, I am unable to say. It is the only record 

 from northern Siam I have seen. Robinson and Kloss ^ record a male 

 from Tasan, Chumporn, and five specimens from Tapli, Pakchan 

 Estuary. 



P. m.Jinschii (Bartels) (P. m. subsp. remotum Robinson and Kloss) 

 is found in the Malay States, Sumatra, and western Java. I have 

 seen no specimens of this form. It is said to be darker and duller, 

 with little or no white on the tail. Possibly it occurs in Patani. 



PIPRISOMA MODESTA PALLESCENS Riley 



Piprisoma modesta pallescens Riley, Proc. Biol. Soc. Washington, vol. 48, p. 148, 

 1935 (Pak Chong, eastern Siam). 



One female, Tha Chang, March 14, 1927; one female, Pak Chong^ 

 November 26, 1929. 



The United States National Museum also possesses a female from 

 Ok Yam, Franco-Siamese Boundary, collected by C. Boden Kloss. 



These three specimens differ from the two males and one female 

 from Trang mentioned above as follows: Paler and more grayish 



' Journ. Federated Malay States Mus., vol. 11, p. 63, 1923. 

 « Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 241, 1934. 

 • Journ. Nat. Soc. Siam, vol. 3, p. 417, 1919. 

 ' Kungl. Svenska Vet.-Akad. Handl., vol. 56, no. 2, p. 36, 1916. 

 « Journ. Nat. Hist. Soc. Siam, vol. 6, p. 392, 1924 



