THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 97 



9. ad, Tapli, Pakchan, Peninsular Siam. 3 March, 1919. 

 (No. 4399). 



" Iris orange ; bill black, base grey ; feet pale yellow ". 



Total length 715; wing 438; tail 305; tarsus 105; bill from 

 gape 50 mm. 



This bird, shot in heavy jungle, is fairly adult, with the bars 

 on the breast well developed and a crest of 100 mm. The bird from 

 Terutau is immature and is entirely immaculate beneath. 



W. L. Sclater (Bull. Brit. Orn. Club, xl, 1919, p. 37) has 

 recently described Southern Chinese birds, >S'j9. n. fokieiisis, as 

 smaller than the Himalayan form (wing, 6 419 — 425, 9 445 mm.), 

 against an average, in the Himalayan typical specimens, of d" 450, 

 9 485 mm., and in all cases lacking the long crest feathers. Our 

 specimen, above, apparently agrees in size with the Chinese bird, 

 but has the crest-feathers fully developed. We do not care to 

 establish yet a third race on a single adult specimen. Swann, how- 

 ever, (Synopsis Accipitres, 2nd ed., part ii, Jan. 1922, p. 119, note), 

 records the fact that Chinese and Hainan birds have the long crest 

 feathers when fully adult. 



140. Spizaetus alboniger (Blyth). 



Nisaetus alboiiiger, Blyth, Journ. Asiat. vSoc. Bengal, xiv, 1845, p. 



173 (Malacca). 

 Spizaetus alboniger, A., p. 12 (Bankasoon) ; C. ii, p. 191 (Mei'gui 



and Bankasoon) ; M. 1, p. 28 (Tung Song, Peninsular Siam). 



This Harpy Eagle has only been recorded once from any part 

 of Siam ; we possess specimens from various parts of Perak. The 

 bird frequents hilly regions covered with dense forest and is, there- 

 fore, very difficult to procure, though not really rare, 



Elanus csBruleus caeruleus (Desf.). 



Falco cceruleus, Desf., Mem. Acad. Sc, 1787, p. 503, pi. 15 



(Algeria). 

 Elanus cceruleus caeruleus, I., p. 129 (Neighbourhood of Bangkok). 



I- Gyldenstolije, Kungl. Sv. Vet. Akad. Handl. M. Baker, Joiun. N. H. Soc. Siam, iii, 1919. 



56, No. 2, 1916. (first part). 



J. Robinson. Journ. F. M. S. Mus. vii, 1917 Baker. Journ N.H. Soc. Siam, iii, 1919. 



K. Kloss, Ibis, 1918. (second parlK 



L. Robinson and Kloss, Journ. N.H. Soc. Siam, M.I. Baker, Journ. N.H. Soc. Siam, iv, 1920. 



iii, 1919. (third part). 



VOL. V, NO. 2, 1922. 



