12 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.77 



Family MICROPODIDAE 



SWIFTS 



18. COLLOCALIA VESTITA MARATUA RUey 



CoUocaUa vestita maratua Riley, Proc. Biol. Soc. Washington, vol. 40, 1927, 

 p. 141 (Maratua). 



One adult male (the type), Pulo Maratua, May 21. 



This specimen is similar to Gollocoilia vestita mearnsi of the Philip- 

 pines but the upper parts are deeper black, less sooty; the wings 

 showing a more purplish sheen, less greenish; the lower parts much 

 duskier. "Wing, 118; tail, 48. 



While the present form was founded upon one specimen only, I 

 had before me 14 specimens of GoUocaliob vestita, mearnsi and 4 of 

 Collocolia vestita vestita. From the former it differs as described, 

 from the latter it may be told by the fact that it is a much deeper, 

 less brownish, black above, the wings and tail more purplish, less 

 greenish, but below the two forms are much alike. Gollocalia vestita 

 aenigma of Celebes resembles Gollocalia vestita maratua above, but is 

 lighter below, especially on the throat, and has a somewhat longer 

 wing. 



It would appear as though the birds of this genus are not great 

 Avanderers, but are more or less sedentary. 



19. COLLOCALLA. FRANCICA PERPLEXA Riley 



Collocalia francica pei'plexa J.ilky, Proc. Biol. Soc. Washington, vol. 40, 1927, 

 p. 140 (Maratua). 



Eight males, three females, and one unsexed, Pulo Maratua, May 

 21 and 24; one male and one female, Pulo Pandjang, May 2; one 

 female Pulo Balik Kukup, June 10; one female, Pulo Raboe Raboe, 

 July 27. 



The above series is similar to Gollocalia francica germami of Siam 

 and the Philippines, but the wing averages longer, the back is a 

 deeper, less brownish, black, the rump band much darker and much 

 less pronounced, the wings and tail with more purplish and less 

 greenish sheen. The present specimens have been compared with 

 about an equal number from Peninsular Siam and the Philippines. 

 There do not appear to be any differences in size and color between 

 the sexes. The nine males from islands off northeast Borneo have 

 wings, 119.5-125 (121.8) ; eight males from Peninsular Siam (4) 

 and the Philippines (4) have wings, 109-122 (117.3). Apparently 

 no form of Gollocalia francica has been recorded from Borneo before. 

 Gollocalia francica hartelsi Stresemann ^^ from west Java is not 

 available for examination, but the distribution of the forms is now 



isorn. Monatsb., 1927, p. 46. 



