Ornithology of No rt hern Borneo. 75 



17. Falco communis. 



Faico cotnmtum, Gin. ; SliarpCj Cat. B. i. p. 376 (1874) ; 

 Salvad. Ucc. Born. p. 1 (1874); Sharpe, P. Z. S. 1881, 

 p. 790. 



Falco jJeregrinus, Sharpe, P. Z. S. 1879, p. 323; id. Ibis, 

 1879, p. 237. 



a. ^ ad. Labuan, spring of 1886. 

 b,c. (^ ^ juv. Labuan, Dec. 8, 1887. 



All three specimens are of the ordinary light form, not tlie 

 dark richly coloured Peregrine of the Sunda Islands, of 

 which the British Museum possesses a splendid example 

 from the Lawas River. 



[Only found during the N.E. monsoon.] 



18. Clrchneis tinnunculus. 



Ccrchneis tinnunculus {h.) ; Sharpe, Cat. B. i. p. 425 (1874) ; 

 id. P. Z. S. 1879, p. 323. 

 a. c? juv. Abai, Dec. 25, 1887. 



An immature male, apparently of the dark Chinese form. 



[This species is evidently very scarce, and I only noticed 

 it on the large plains of Tampassuk.] 



Suborder PANDIONES. 



19. Pandion haliaetus. 



Pundion haliaetus (L.) ; Sharpe, Cat. B. i. p. 449 (1874) ; 

 Salvad. Ucc. Born. p. 7 (1874) ; Sharpe, P. Z. S. 1879, 

 p. 324. 



a. ? ad. Abai, Dec. 26, 1887. Wing 19*2 inches. 



b. ? ad. Abai, Dec. 27, 1887. Wing 18-5 inches. 



c. ? imm. Abai, Dec. 26, 1887. Wing 18*75 inches. 

 These birds belong to the large form of Osprey and not to 



the small Australian race. 



[The first female had the iris yellow ; bill black, slaty 

 blue at base of lower mandible; cere slaty blue; feet white^ 

 with a pale bluish tinge ; claws black. I think that the 

 Osprey is a migrant in Northern Borneo.] 



