56 



PBOCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 64. 



Collocalia vestita aenigma belongs to the feathered-tarsi section 

 of the genus, and in the above series I can only find three specimens 

 that have the tarsi apparently bare, but the series is more or less 

 in molt and some specimens that at first sight have this member 

 apparently denuded when examined under a glass show one or two 

 minute feathers. The three specimens above alluded to are so much 

 like the rest of the series in every other way that this condition is 

 I^robably due to loss by molt. 



In the original description only the measurement of the type was 

 given. The four males measure: Wing, 133-122 (117.9) ; tail, 46-50 

 (48); culmen, 4.5-5 (4.8); the seven females: wing, 112-120.5 

 (116.7) ; tail, 46.5-50.5 (48.6) ; culmen, 4-5 (4.6). 



117. HIRUNDAPUS CELEBENSIS (Sclater). 



One male (?), Ayermadidi, May 18, 1916. 



The above specimen, though marked as a male is probably a 

 female, as the lores are a dirty brown; the body a greenish black; 

 a patch on the lower flanks and under tail-coverts white. It meas- 

 ures : Wing, 188, tail, 59 ; culmen, 9.5. The outer primary has been 

 lost and is being replaced by a new one. 



I have a specimen from Mindoro (topotype of Chaetura dubia 

 McGregor) and two specimens from Basilan; they are probably all 

 males, though the two latter are unsexed. I can detect no difference 

 between the Mindoro and Basilan birds; both are a beautiful pur- 

 plish black, the rump and back more sooty and inclining to brownish, 

 the wings and tails steely black with purplish and greenish reflec- 

 tions, the lores, under tail-coverts, and lower flanks white, quite 

 different from the Celebes specimen, but the latter is probably a 

 female. There is an indication that the Philippine bird may prove 

 to be racially different as all the measurements are greater than those 

 indicated by Meyer and Wiglesworth^, in which case the Philippine 

 race would stand as Hiimndapus celebensis dubia McGregor. 



The males available measure as follows: 



No. 201931, male, Alag River. Mindoro 



No. 192474 [male], Basila-n Island 



No. 192475 Do 



Type of Chaetura dubia* 



Hirundapus celebensis f 



Culmen. 



mm. 



10. 

 9 

 9. 



10 



* McGregor, Man. Philippine Birds, pt. 1, 1909, p. 359. 



t Meyer and Wiglesworth, Birds Celebes, vol. 1, 1898, p. 330. 



Gizzard very large and filled with the heads, wings, legs, etc., of insects, 

 which were possibly flying ants. — H. C. R. 



3 Birds of Celebes, vol. 1, 1898, p. 329. 



