Birds of the Philippine Islands. 503 



most striking characteristics are the great length and thickness 

 of the rictal bristles. 



The following is a list of the species represented in the 

 present collection from the Highlands of North Luzon : — 



1. AcciPiTER MANiLLENSis (Mcyen) ; Gurne}'; List Diurnal 

 Birds of Prey, App. O, p. 173 (1884). 



Two specimens sent by Mr. Whitehead, both females, 

 are referable to this subspecies of A. viryatus (Temm.), 

 having the whole of the sides and flanks of a nearly uniform 

 rufous chestnut and the thighs barred with rufous brown and 

 white. Wing 6'9-7"0 inches, tail 5*8-5"9. 



2. SpiZAiirus philippensis, Gurney ; Sharpe, Cat. B. Brit. 

 Mus. i. p. 261 (1874). 



A very fine adult male example of this rare species, agree- 

 ing perfectly with the specimen figured by Tweeddale, 

 Tr. Z. S. ix. p. 141, pi. xxiv. 



3. Spilornis holospilus (Vig.) ; Grant, Ibis, 1894, 

 p. 407. 



The Avidth of the subterminal white band across the tail 

 varies greatly in different individuals. In a pair of specimens 

 from Central Luzon recorded in the last collection, the male 

 has the white band 1 inch wide, while in the female it is 1'2. 

 The present collection contains a female which has the white 

 band still wider (1*9 inch), and the whole of the lower back 

 is spotted with white. The width of band apparently 

 decreases with age. 



4. BuTASTUR iNDicus (Gmcl.) ; Sharpe, Cat. B. Brit. Mus. 

 i. p. 297 (1874). 



A young bird in the first plumage. 



5. Pernis ptilonorhynchus (Temm.) ; Sharpe, Cat. B. 

 Brit. Mus. i. p. 347 (1874). 



A bird in young plumage. 



6. Bubo philippensis (Gray) ; Sharpe, Cat. B. Brit. Mus. 

 ii. p. 43 (1875). 



Pseudoptym' philippensis, Walden, Tr. Z. S. ix. p. 144, 

 pi. XXV. fig. 2 (1875). 



