11 



by Dean C. Worcester, February 19, 1905, does not differ from the 

 above except in having the occipital plumes one-half as long. 



Butorides javanica (Horsf.). (PL VIII.) 



Three nests of this species were found near Balete. Two of these 

 each contained two young, and the third held a single blue egg 

 measuring 1.48 by 1.06. Each consisted of a very small mass of 

 twigs and was placed on the roots of a fallen tree in midstream. 

 The nests were examined during the latter part of April. A heron 

 collected in Mindoro by Everett is listed as Butorides javanica 

 amurensis (Schrenck). 1 



Bubulcus coromandus (Bodd.). 



A few individuals observed along the lower river. 



Ardetta cinnamomea (Gmel.). 



One example of the chestnut bittern was seen near Balete. 



Anas luzonica Fraser. 



The Luzon mallard was not uncommon on the lower river, and 

 an occasional pair was seen as far up as Balete. During this trip 

 no other species of duck was seen. 



Anhinga melanogaster (Pennant). 



Plotus melanogaster SHARPE, Hand-list, I, p. 236. 



Three specimens of the black-breasted darter were preserved. 



Haliastur intennedius Gurney. 

 Abundant. 



Pernis ptilonorhynchus (Temm.). 



Dean C. Worcester killed a nesting female at Chicago, February 

 19, 1905, and a male was secured by our party at the same place 

 in March. 



Microhierax erythrogenys (Vig.). 



One specimen from the vicinity of Chicago. 



Polioaetus ichthyaetus (Horsf.) ? 



Birds supposed to be of this species were seen along the river on 

 several occasions. 



Ninox mindorensis Grant. 



Two male specimens of the Mindoro hawk-owl from Balete are 



1 Hartert, Novit. ZooL, II, p. 488. 



