15 .. 



tail coverts are pure white. My description^ of the female of this 

 species needs modification. I stated that the fulvous spot on the 

 inner web of the first primary does not reach the web ; this was true 

 of the specimen then in hand, but is not so in other skins. 



Caprimulgus manillensis Wald. 



Four specimens of the Manila goat-sucker from Balete do not 

 differ from others taken in Luzon and Masbate. 



Macropteryx major Hartert. 



Macroptcryx major Habtekt, Novit. Zool., IT, p. 473 (1895), teste Sliarpe, 

 Hand-list, II, p. 89. 



Macropteryx comata Hartert, Cat. Bds. XVI, p. 517 (pt.). 



Three specimens from Balete. 



Collocalia whiteheadi Grant. 



Collocalia fuciphaga (Thunb.). 



Small swifts were exceedingly abundant along the river in the 

 vicinity of our upper camp. The large feeding flocks comprised 

 mainly C. fuciphaga and C. whiteheadi with only occasional in- 

 dividuals of C. marginata and C. linchi. The first two species 

 mentioned are very similar and the presence or absence of tarsal 

 plumes seems to be the most reliable criterion for their identifica- 

 tion and should be noted while the birds are in the flesh, as the 

 plumes are so small as to be very easily worn off by the string of 

 the label. 



Collocalia marginata Salvad. 



One specimen of this small species was taken by us at Puerto 

 Galera, Mindoro, in December, 1902; another was killed near 

 Balete, May 11, 1905. The species seems to be rare in Mindoro 

 and the few individuals seen were associated with C. fuciphaga 

 and whiteheadi. 



Collocalia linchi Horsf . and Moore. 



A small flock of this species was discovered feeding over the 

 river at tlie base of the mountains on May .5, and two specimens 

 were killed. I believe this is the first time Linch's swift has been 

 taken in Mindoro. 



Chsetura dubia new species. (PI. XII.) 



Type. — Adult male, Xo. 4717, Government Laboratories Col- 

 lection; Mindoro, P. I., March 18, 1905; McGregor et ali*. 



^ Bull. Philippine Mus., No. 1, p. 6. 



