50 BULLETIN 17 2, UNITED STATES NATIONAL MUSEUM 



The range of the form, according to Stuart Baker, is southern China 

 and the Indo-Burmese countries to Tenasserim. 



Robinson and Kloss's ^^ record of S'pizaetus nipalensis from Pulo 

 Terutau and that of Gyldenstolpe " from Hue Sai, northwest of Koh 

 Lak, seem to belong to this form, which had not been separated at 

 the time they wrote. Robinson and Kloss "^ record a female from 

 Tapli, Pakchan, taken March 3 ; de Schauensee ^^ took a female at 

 Cliiengmai, 4,500 feet, February 27. 



NISAETUS ALBONIGER Blyth 



Nisaetus alboniger Blyth, Journ. Asiat. Soc. Bengal, vol. 14, p. 173, 1845 (Malacca). 



Dr. W. L. Abbott collected two males at Lay Song Hong, Trang, 

 August 2G and December 31, 1896. 



Dr. Abbott describes the soft parts as: Iris yellow or greenish 

 yellow; bill and cere black, low^er mandible leaden at base; feet yellow, 

 claws black. The contents of the stomachs in both specimens con- 

 tained the remains of lizards. 



Herbert ^° recorded this species for Siam, but without locality; later 

 Baker ^^ examined the specimen and recorded it as from Tung Song, 

 Peninsular Siam. Besides the two collected by Dr. Abbott, this is 

 apparently the only record for Siam. 



The species ranges from southern Tenasserim south through Penin- 

 sular Siam to the Malay States and the Sunda Islands as far as Borneo. 

 It seems to be commoner in the southern part of its range. 



The wang in the two specimens measures 310-317 mm. In onei 

 stage of the immature plumage the head and lower parts are white and 

 the back and wings light blackish brown, each feather edged with 

 white. In any plumage this species can be distinguished by size 

 from the other two species of the genus occurring in Siam. 



NISAETUS CIRRHATUS LIMNAETUS (Horsfield) 



Falco limnaelus Horsfield, Trans. Linn. Soc. London, vol. 13, p. 138, 1821 

 (Java) . 



The following specimens collected by Dr. W. L. Abbott are in the 

 United States National Museum: Two males and seven females from 

 Trang (Prahmon, March 13, 1896; Tyching, May 2-July 3, 1896; 

 Lay Song Hong, September 7-December 19, 1896; Chong, January 24, 

 1897). 



Dr. Abbott thus describes the soft parts: Iris brownish yellow, 

 grayish brown, or golden-yellow; bill black; cere dull black; feet 



" Ibis, 1911, p. 22. 



" Kungl. Svenska Vet.-Akad. Handl., vol. 56, no. 2, p. 126, 1916. 



" Journ. Nat. Hist. Soc. Siam, vol. 6, no. 2, p. 96, 1923. 



" Proc. Acad. Nat. Sci. Philadelphia, vol. 86, p. 270, 1934. 



eo Journ. Nat. Hist. Soc. Siam, vol. 2, p. 58, 1916. 



«' Journ. Nat. Hist. Soc. Siam, vol. 4, p. 28, 1920. 



