566 ON THE OENITHOLOGY OF THE PHILIPPINES. [1878. 



1878. 



P.Z.S.1878, Contributions to the Ornithology of the Philippines. — No. IV. On the Collection made by Mr. A. H. 

 P- ^^^- Everett in the Islands of Dinagat, Bazol, Ifijpah, and Sakuyok. By Arthur, Marquis of 



TwEEDDALE, F.R.S., President of the Society. [From the ' Proceedings of the Zoological 

 Society of London,' read January 15, 1878*, Plates VI.-VIII. in orig.'] 



The four islands in which Mr. Everett collected the birds of which I propose to give an account 

 P.Z.S.1878, are situated to the north of the shores of Mindanao, and are only separated from that island by 

 ^' ' narrow channels. Through these channels the wind blows with considerable force throughout 

 the greater part of the year, being either the gales of the S.W. or the N.E. monsoon. 



Mr. Everett's observations on the ornithological features of these islands, coming as they do 

 from a personal observer, merit transcription. He writes: — "No district visited so far has 

 equalled the -sdcinity of Manilla in the number and variety of its birds. The progress of the 

 work shows that a very close general similarity exists between the islands of ^lindanao and 

 Luzon, though there are some marked local differences. This was to be expected ; and it is 

 rather surprising that the differences are as marked as they are, when we consider that not only 

 are the islands separated from one another by very narrow spaces of sea, but that they are 

 situated in an area where strong winds blow in various directions, with little cessation during the 

 major part of the year, accompanied with violent squalls and typhoons, so that any high degree 

 of specialization in the local avifauna would seem, a priori, out of the question." 



In the island of Dinagat, Mr. Everett writes, he found birds to be excessively rare ; still he 

 obtained 39 species, 7 of which were undescribed : — 



Ceyx argentata. Dicceum everetti. 



Hypothymis coslestis. Prionochilus olivaceus. 



Mixornis capitalis. jEthopiyga dubia. 

 Dicceum schistaceiim. 



Only 13 species were obtained in the small islands of Nipah, Bazol, and Sakuyok ; and they 

 are all known inhabitants of Mindanao. 



1. Cacatua h^maturoptgia (1). 

 [Nipah, $ , July.] 



2. LORICULUS HARTLAUBI (7). 



{a. Dinagat, <S ? , June. b. Bazol, c? , July.] 



The example figured, P. Z. S. 1877, p. 819 {6), is in full adult plumage, the occipital 

 feathers being orange-red, grading into orange on the nape, which colour suffuses and descends 

 the back, losing itself in the pure green of the lower back. There is no blue about the face, 

 chin, or throat ; the dark blue of the under surface of the rectrices fades into pale blue at their 

 apices. The orange hue on the back of the female figured is less intense. 



* [PubUshed June 1st, 1878.— Ed.] 



