BIRDS FROM NORTHERN MINDANAO. 



71 



BUCEROTID/E. 



Hydrocorax mindanensis (Tweeddale). 



One immature female. 

 Penelopides affinis Tweeddale. 



One young female with smooth hill was taken Septemher 18. 

 Craniorrhinus leucocephalus (Vieillot). 



One male and two females in adult plumage. 



MEROPID/E. 



Merops americanus P. L. S. Miiller. 



One female. 



CAPRIMULGID/C. 



Lyncornis macrotis (Vigors). 



One female from Butuan, October 21. This specimen is exactly similar 

 in color to a female from Bataan Province, Luzon, but is much smaller. 

 The male collected by us in Basilan is also smaller than males from Luzon 

 and from Mindoro. Whitehead found both large and small birds in 

 northern Luzon. Grant/ who had the advantage of comparing his speci- 

 mens with the types, seemed to think that mindanensis was not distinct 

 from macrotis. Whitehead was in doubt on the subject and gave both 

 species in his field notes.^ The case is a very puzzling one. Were it not 

 for Whitehead's single small specimen fr6m Luzon I should certainly 

 consider these two species distinct. 



Measurements of Lyncornis. 



Sex and locality. 



Wing. 



Tail. 





mm. 

 265 

 282 

 252 

 280 



mm. 

 165 

 180 

 160 

 190 





Female from Mindanao 







CYPSELID>e. 

 Collocalia troglodytes Gray. 



One female was taken, September 33. 

 Collocalia fusciphaga (Thunberg). 



A single specimen of Thunberg's swift was collected. 



^lUs (1894), VI, 6, 519; (1895), VII, 1, 463. 

 'Ibis (1899), VII, 5, 383. 



