xm,D, 1 



McGregor: Philippine Birds, II 



17 



Hodgson must be revived for the large spine-tailed swifts, which 

 Ridgway has done.^ 



In Ridgway's key to the genera, Hirundapus is said to have 

 the "tenth (outermost) primary longest, or at least not distinctly 

 shorter than the ninth." I find that this is true of more than 

 thirty specimens of Chsetura gigantea (Temminck). In the 

 type and the cotype of Ch^tura dubia, both in perfect plumage, 



Fio 9. Cksstura dubia McGregor. Actual size. 



FlO. 10. C/ia^tura giffcntea (Temminck), generic details. Actual size. 



the outermost primary is shorter than the next one (compare 

 figs. 9 and 10) . In the third specimen, from Cavite, of the latter 

 species the tips of the primaries are badly abraded, so that it 

 is impossible to say which was the longest. The difference in 

 the length of the tail spines in these two species is shown in 

 the text figures. The shorter spines do not seem to have been 

 abraded. 



' Loc. cit. 



152710- 



