THE BIRDS OF SOUTH-WEST AND PENINSULAR SIAM. 97 



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

 (No. 4399). 



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



Total length 715; wing 438; tail 305; tarsus 105; )>ill from 

 gape 50 uiiii. 



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

 on the breast well developed and a crest of 100 nnn. 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'^x n. fokiensls, as 

 smaller than the Himalayan form (wing, 6 419 — 425, 2 445 nun.), 

 against an average, in the Himalaj'an typical specimens, of d 450, 

 ? 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 lonsf crest 

 feathers when fully adult. 



140. Spizaetus alboniger (Blyth). 



Nisaetus alhotviger, Blyth, Jom'u. Asiat. Soc. Bengal, xiv, 1845, p. 



173 (Malacca). 

 S'pizaetux alboniger, A., p. 12 (Bankasoon) ; C. ii, p. 191 (Mergui 



and Bankasoon) ; M. 1, p. 28 (Tung Song, Peninsular 8iiim). 



This Harpy Eagle has only been recorded once from any jiart 

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

 bird fre(iuents hilly regions covered with dense forest and is, there- 

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



Elanus caeruleus caeruleus (Desf.). 



Falco ccnndeus, Desf., Mem. Acad. Sc, 1787, p. 503, p). 15 



(Algeria). 

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



I" Gyldcnstoli)e, Kungl. Sv. Vet. Akacl. Handl. M. Baker, Journ. N. H. Soc. Siam, iii. 1919. 



56. Xo. '2. 1916. (first part). 



J. Roliinson. .Tourn. K. M. S. Mus. vii, 1917 Baker. Journ X.K. Soc. Siam. iii, 1919. 



K. Kloss, Ibis. 1918. (second partK 



L. Robinson and Kloss, Journ. Js. II. S(x;. Slam, M.I. Baker, Joiun. N.II. Soc. Siam, iv, 1920. 



iii, 1919. (third part). 



VOL. V, NO. 2, 1922.- 



