Brewster on Helminthophaga leucobronchialis. - J 9 



//. pinus. Above yellowish-olive; wing-bands white; lores and post- 

 ocular spot black : cheeks, throat, and under parts generally, rich yellow. 



II. ckrysoptera. Above bluish-ash ; wing-bands yellow ; throat, with a 

 broad head-stripe, embracing the lores, cheeks, and auriculars, black 

 (ashy in the female). Under parts white tinged with ashy on the sides. 



H. leucobronchialis. Upper surface, including wing-bars, as in ckry- 

 soptera. but with the back and wings tinged with olive-green; head-stripe 

 restricted as in pinus: throat, cheeks, and under parts silky-white, unlike 

 either pinus or ckrysoptera; breast more or less strongly washed with 

 yellow. 



H. la-wrencei. Throat unci head-stripes black, the latter embracing the 

 cheeks and auriculars. as in ckrysoptera; wing-bands white, and general 

 coloring yellow or olive-green, as in pinus. 



From the above summary it will appear that neither leucobron- 

 chialis nor lawrencei possesses any important original charac- 

 ters. The former borrows its ashy back and yellow wing-bars from 

 ckrysoptera ; its restricted eye-stripe from pinus ; — while the dif- 

 ferential value of its white throat and under parts is materially 

 affected hy the usual presence of more or less yellow on the breast. 

 Lawrencei has absolutely no peculiar markings or coloration ; it 

 simply unites die black throat and broad head-stripes of chrysop- 

 tera with the white wing-bands and general coloring of pinus. 

 In either case there is simply a peculiar combination of borrowed 

 characters. Let us .see how constant these combinations are. 



No. 1.208 (Dr. Fisher's collection, 9 '■ Sing .Sing, New York, 

 July 24. 1881) is in every way similar to the type of leucobron- 

 chialis save that the lores are more broadly hlack and the black 

 of the post-ocular spot spreads backward and downward, embrac- 

 ing nearly the whole of the auricular region. 



No. 1,235 (^ r - Fisher's collection,,^. Sing Sing, August 3, 

 1SS1) differs from the type of leucobronchialis only in having a 

 bread patch of pale yellow on the breast. A large proportion of 

 the specimens previously reported have also exhibited this same 

 peculiarity. 



No. 605 (Dr. Fisher's collection, $ . .Sing Sing, August 24, 

 1879) exhibits a faint wash of lemon-yellow on the throat, 

 while a broad space across the breast is deep gamboge-yellow, 

 and the wing-bands are pure white. 



No. 2.620 (author's collection,? ? adult, Nyack, New Jersey. 

 May, 1 S 7 S ; presented by Eugene V. Bicknell) has the chin 

 decidedl} yellow; the throat, cheeks, and a small space on the 



