500 Mr. J. Whitehead on Birch 



3i8. Hydrociielidox HYBRiDA(Pall.). (Grant, Ibis, 189G, 

 p. 127.) 



This Tern is not uncommon on tlie coasts of the Philip- 

 pine; Islands. I observed it in North Luzon and oft' the 

 coast of Negros. My specimen was obtained in Manila Bay. 



349. Sterna sinensis Gmel. 



Obtained in Manila, where it may be seen in hundreds 

 during the winter. 



350. Larus ridibundus Linn. 



The Black-headed Gull is very common during the winter 

 months oft' the mouth of the Pasig, which river flows into 

 Manila Bay. I also saw a large Black-backed Gull on the 

 sands near Aparri (North Luzon), which I was unable to 

 secure. 



351. PoDiciPES PHiLipPENsis (Bounat,). 

 Tachijbaptes philippinensis (Bonnat.). (Grant, Ibis, 1895, 



p. 472.) 



The Philippine Dabcliick was obtained at the base o£ 

 Monte Data. 



352. Phalacrocorax sp. inc. 



I saw Cormorants several times on the Abra river in 

 November, and, if I bad known that the genus had not been 

 recorded from the Philippines, I should have taken more 

 trouble to secure a specimen. 



353. Plotus melanogaster (Forster). 



Though we did not preserve a specimen of the Darter, it 

 was observed on many occasions in Luzon and also in 

 Mindoro. 



354. Fregata ARIEL (Gould). 



Fregata minor (Gmel.). (Grant, Ibis, 1896, p. 128.) 

 Not uncommon in the Philippines. We obtained a speci- 

 men at Cape Engano. 



Iris black ; bill and bare skin on face pale Cambridge blue ; 

 pouch pale greyish blue ; feet white. 



