1879.] MR. R. B. SHARPE ON THE BIRDS OF LABUAN. 323 



as inhabiting Labuan, it is quite possible that further observers may 

 recognize more. The species are very little understood, as may be 

 gathered from the recent researches of Capt. Legge into the Cey- 

 lonese Spizaeti {cf. Legge, B. Ceylon, pp. 51, 55). 



The young bird which Mr. Low forwarded was obtained from the 

 egg, which he opened by cutting the shell in two halves and ex- 

 tracting the small occupant, who lived with him to a good size. He 

 tells me that this Eagle builds on very high trees, and only lays one 

 ess. Two nests which he observed had onlv one e°-°; in each. That 

 sent on the present occasion was taken in January IS 75; it is white, 

 with a few stains of ochraceous brown ; axis 2-8, diam. 2-2. 



4. Haliaetus leucogaster (Gm.) 



Haliaetus leucogaster, Sharpe, Cat. B. i. p. 307. 



Cuncuma leucogaster, Salvad. t. c. p. 5. 



A young bird was in Governor Ussher's collection from Brunei ; 

 and he has since sent an adult bird shot by his boy Buak in La- 

 buan. Mr. Treacher's collection also contained a fine adult bird, with 

 the native name " Alang piak." 



5. Haliastur intermedius, Gurney. 



Haliastur intermedius, Sharpe, Cat. B. i. p. 314. 



H. indus, Salvad. t.c. p. 12. 



A young and an old bird from Governor Ussher, the latter shot 

 on the Kina Banua river in x\pril 1877. Mr. Treacher sends an 

 old bird (No. 46) with the native name "Alang merah," and a young 

 one (No. 27) simply marked "Alang" and apparently not recognized 

 by the collector as "the immature bird of the present species. Mr. 

 Low sends an egg of this species taken from a nest in a lofty tree 

 in December 1873; it is dull white; axis L95 inch, diam. 1'4. 



Subfamily Falconing. 



6. Falco peregrinus, Tunst. 



Falco communis, Gm., Sharpe, Cat. B. i. p. 376 ; Salvad. t. c. p. 1. 



A fine adult bird, of the true F. peregrinus type, procured by Mr. 

 Treacher, according to whom it is called " Alang juali." The species 

 has only been obtained before in Borneo by Motley at Banjermassing. 



7. Cerchneis tinnunculbs (L.). 



Cerchneis tinnunctdus, Sharpe, Cat. B. i. p. 425. 



The only Kestrel yet recorded from Borneo is Cerchneis moluc- 

 censis, which is said to have been collected by Schwaner (cf. Salvad. 

 Ucc. Born. p. 3). Governor Ussher procured a specimen, which, 

 however, I believe to be the dark form of European Kestrel, known 

 to ornithologists as Cerclineis japonicus. This opinion is confirmed 

 by a second example of a Kestrel obtained by Mr. Treacher in La- 

 buan, evidently of the same species as the one shot by Governor 

 Ussher, and apparently a young male of C. japonicus, with the 

 basal half of the tail commencing to get blue. 



21* 



