1877.] THE ISLAND OF LUZON. . 513 



the most part obtained by Dr. Steere*. This total is partly arrived at by including 23 species 

 from the island of Palawan, 4 from that of Balabac, and 4 from the Sooloo Islands. In a footnote 

 {t. c. p. 12G) \ant.\). 294] I excluded the Sooloo archipelago from the PhiUppine area; and as 

 we have only the evidence of four known Sooloo species of birds to guide us, I am disinclined as 

 yet to concur in Mr. Sharpe's opinion that these islands ought to be included. Nor am I quite 

 certain that Palawan and still more Balabac should not be excluded. That Palawan certainly is 

 a border region, intervening between Borneo and the Philippine Islands, is made evident by 

 Dr. Steere's remarkable discoveries ; but the Malayan character of its ornis overpowers the 

 Philippine element ; and until its fauna and that of the Sooloo Islands shall have been more 

 completely investigated, I purpose to exclude them from what I consider to be the strictly 

 Philippine area. Deducting, therefore, the 23 Palawan, the 4 Balabac, and the 4 Sooloo species 

 (not known in the Philippine archipelago as restricted by me) from Mr. Sharpe's list {t. c. p. 3-JO), 

 in all we have a total of 35 purely Philippine birds added by Dr. Steere to my amended number 

 of 216, making 251 in all. The naturalists of the 'Challenger' Expedition added 11 more (see 

 my paper, P. Z. S. 1877, p. 537 [ant. p. 459]), making an amended total of 2G2 Philippine species ; 

 and to this number Mr. Everett has enabled me to add 6 from Luzon, namely three new species, 



Megaluriis ntficeps, Bicceum xanthopygium, Oxycerca everetti, 



two not hitherto recorded, 



Motacilla ocularis, Anthus maculatus, 



and one previously supposed to be a Malayan species, 



Turnix fasciatus. 

 So 268 species of birds may at this date be considered the total number known to occur in the 

 Philippine Islands, exclusive of Palawan, Balabac, and the Sooloos. 



In the Table showing the geographical distribution of the Philippine birds {t. c. pp. 249, I'-^-^^-l^^'''' 

 252) [ant. pp. 410-413] I enumerated 57 the exact habitat of which had not been established. 

 From this, one species (the so-called Cratero])Us caudatus) must be deducted. Mr. Sharpe has 

 been able most satisfactorily to reduce the number by 8 {t. c. p. 308) ; and Mr. Everett's dis- 

 coveries enable me to still further diminish the number by 9. 



Philippine species of which the exact habitat has been determined by Mr. Everett : — 

 Cajyrimulgus griseatus. Parus elegans. 



Calliope camtschatkensis. Geopelia striata. 



Phjlloscopms borealis (olim Turnix ocellata. 



magnirostris). Hypotoenidia jMhppensis. 



Orthotomus derUanus. Ardetta cinnamomea. 



So the precise habitats of only 39 species now remain undetermined. 



* Sharpe, Trans. Linn. Soc. ser. 2, Zool. i. p. 307. The uumher is less by two than Mr. Sharpe's estimate (t. c. p. 308), 

 in consequence of my not being able to recognize Chysoeolapes wactiUcejJS, Sharpe, as being distinct from C. liwidus 

 (Scop.), and Hirundo rustica of the Islands as differing from iT. (/utiamlis. Bnichyurits i^ropinqims, Sharpe, ex Mindanao, 

 does not appear to be distinct from Erytliropitta erythrogastra, ex Luzon, though the Balabac type may be different. 

 Perhaps the Zebu Cyornis, C. banyuma? of my list (no. 84), may have to Ijo added as constituting a distinct species ; for it 

 appears to differ specificaUy from C. pTiilippinensis, Sharpe, ex Luzon and Panay. 



