70 Mr. R. B. Sharpc on the 



ri5 in. Colour greenish white, with the usual reddish 

 blotches towards the larger end. The second egg is nearly 

 spotless. Length 1*5, diara. 1"2 in.] 



6. Spizaetus limnaetus. 



Spizaetus limnaetus (Horsf.); Sharpe, Cat. B. i. p. 272; 

 Salvad. Ucc. Born. p. 15 (1874); Sharpe, Ibis, 1878, p. 415; 

 id. P. Z. S. 1872, p. 322; id. P. Z. S. 1881, p. 791. 



The series of skins brought home by Mr. Whitehead does 

 not shake my confidence in the conclusions to which I came 

 in the ' Catalogue of Birds,^ excepting that I may be mis- 

 taken with regard to the uniform dark brown plumage, which, 

 instead of being characteristic of the fully adult bird only, 

 may be merely a melanistic form, such as we are accustomed 

 to see in the genus Fernis, and one liable to occur at any 

 stage of the bird^s life. 



Leaving aside the uniform black-plumaged bird, which 

 was obtained by Mr. Whitehead only in Palawan, we find 

 in the other six specimens procured four different styles of 

 plumage : — first the white-breasted stage, with a few streaks 

 on the underparts; then a browner stage, streaked with black ; 

 a white-breasted bird, with broad streaks ; and a bird with 

 nearly uniform brown breast, not, however, approaching the 

 brown melanistic stage. 



The following is a list of the specimens : — 

 a. $ juv. Tagnso, Palawan, July 18, 1887. Wing 16'5 in. 

 fj. ? ad. [mel.]. Taguso, Palawan, Sept. W^ing 16"5 in. 



c. ? ad. Labuan, Dec. 15, 1885. Wing 16*4 inches. 



d. ^ ad. Labuan, Nov. 188G. Wing 15 inches. 



e. ^ juv. Labuan, Aug. 14, 1885. Wing 14*75 inches. 

 /. ^ ad. Tampassuk, Feb. 17, 1886. Wing 16-3 inches. 

 //. ? ad. Tampassnk, Feb. 19, 1886. Wing 15 inches. 



As far as our present experience goes, there is only one 

 of these Crested Eagles in Borneo. Spizaetus cirrhatus of 

 Salvadori's book (p, 13) and S. limnaetus (p. 15) are the 

 same species. 



[in Talawan this species was decidedly scarce, and I hardly 

 s-aw another specimen beyond the two procured. In Labuau 



