26 MacCattghey, The Hawaiian Elepaio. ban. 



Quills dark brown, narrowly margined with pale tawny on the outer webs, 

 with creamy buff on the inner webs, more so toward the bases. Seconda- 

 ries tipped with white. 



Rectrices broadly tipped with white, as in the final plumage, but the 

 white color does not extend so far. 



Chin and throat spotted black and white, in younger specimens appear- 

 ing almost pure white. This variation is caused by the feathers being 

 black at the base and more or less broadly tipped with white. 



Under-parts below the throat dark tawny brownish-yellow, with a 

 broad, more or less irregularly defined, white patch on the upper breast, 

 and extending to the under-tail-coverts, which are also white. Feathers 

 of the thighs black, tipped with white. Under-wing-coverts deep brown 

 and white. 



Iris, bill, legs and feet as in final plumage. 



Juvenile plumage: Above tawny brownish-yellow. Pale tawny on 

 rump, browner on head and upper-tail-coverts. Quills dark brown, with 

 pale borders on outer webs and bordered with buff on inner webs. 



Wing-coverts deep brown, broadly tipped with bright brownish-yellow 

 buff. 



Tail-feathers deep brown, with pale borders to the outer webs. Outer- 

 most pair with a small white spot on the outer web and a large white spot 

 on the inner web; the next pairs with white on inner webs only. All these 

 white spots are much less extended than in adult birds and decreasing 

 in size to the middle, so that the central pair of feathers has no white. 



Under-parts tawny buff, passing into white on middle of abdomen. 

 .Some specimens are much whiter than others. Under-wing-coverts buff. 



Iris dark brown. Upper mandible deep brown; lower mandible brown 

 at tip, creamy yellowish at base. Legs and feet slaty-blue, but less bright 

 and paler than in adult birds. 



Measurements of adults. 



inches inches 



Length 5.50-6.00 Bill, depth .20 



Wing 2.70-3.05 Bill, width .18 



Tail 2.40-2.70 Tarsus 0.85-0.90 



Culmen 47- . 53 Toe .63 



Chasiempis gayi Wilson. The Oahu Elepaio. 



Synonymy — Gay's Flycatcher, Oahu Flycatcher; see also under 1. 



Plumage — Adult male: Upper-parts brownish (feathers with bluish 

 bases), washed with tawny brownish-yellow, especially about the head. 



Forehead rusty brownish-yellow. Lores and about the eyes white. 



Wing-coverts brownish-black, forming a well-defined bar. Lesser 

 coverts tipped less regularly with white. Primaries brown with buff 

 edges. Tail-coverts white. 



