156 Proceedings of the Biological Society of Washington. 



Collocalia vestita aenigma, subsp. nov. 



Type, adult male, U. S. National Museum, No. 250207, Parigi, Celebes, 

 September 10, 1916. Collected by H. C. Raven (original No. 3056). 



Similar to Collocalia vestita vestita from Java but much darker above, the 

 wings and tail more shiny; lighter below, especially on the throat. Wing, 

 114.5; tail, 48.5; culmen, 5 mm. 



Remarks. — Material examined consists of the type, three females and an 

 additional male from the type locality, one male and two females from 

 Gimpoe, and one male and two females from Pinedapa. These are so 

 much darker above, with the throats so much lighter than the Javan form 

 that they doubtless represent a distinct species. 



Stresemann* records his Collocalia fuciphaga micans from Celebes but 

 that belongs to the unfeathered-tarsi section of the genus, so that Celebes 

 like Java has two closed related species that can only be told apart with 

 difficulty. 



Rhamphococcyx centralis, sp. nov. 



Type, adult male, U. S. National Museum, 250,806, Rano Lindoe, Cele- 

 bes, March 21, 1917. Collected by H. C. Raven (original No. 3989). 



Similar to Rhamphococcyx c. calorhynchus but bill larger and more 

 arched, the top of head mouse gray, throat, chest, and mantle vinaceous- 

 russet, lighter on the throat and hind-neck and shading into cameo brown 

 on the chest and mantle; wings and tail less purplish. Wing, 189; tail, 

 343; culmen, 44: depth of bill at nostril, 20 mm. 



Remarks. — In R. c. calorhynchus the top of head is deep mouse gray, 

 the throat, chest, and mantle kaiser brown. At first it would seem that 

 I am redescribing Rhamphococcyx calorhynchus meridionalis Meyer and 

 Wiglesworth, but after carefully reading their description in Birds Celebes, 

 I, 1898, 227, wherein they say the only difference between it and R. c. 

 calorhynchus is the lighter color of the top of the head, I have come to 

 the conclusion that I am dealing with a different species. I say species 

 advisably, for Raven took both the present bird and R. c. calorhynchus 

 at Parigi. In addition to the typejthere are a male and female from Parigi, 

 two females from Laboea Sore, two males and five females from Pinedapa, 

 and one female from Gimpoe. 



From the following measurements it will be seen that the wing in the 

 above described species is longer, also: 



* Verhand. Orn. Ges. Bayern, 12, 1914, 6. 



