A A Nelson and Palmer on Five Nezv Birds from Mexico. 



Jan. 



This new subspecies may be recognized by its generally paler 

 colors in comparison with typical rufescens from near the type 

 locality, Temiscaltepec in the state of Mexico. Numerous other 

 specimens of this bird from Jalapa to the City of Orizaba, in 

 Vera Cruz, are also typical in coloration. The following detailed 

 comparison shows the most marked characters separating the 

 two forms. It may be noted here that the plate of Hcemophila 

 rufescens in the 'Biologia Centrali-Americana' is an excellent 

 representation of the typical rufescens. 



A. rufescens. 



Crown dark rufous or chestnut 

 with a distinct but irregular ashy 

 median stripe, and with a blackish 

 border on each side. 



Lores dark gray. 



Superciliary stripe white, washed 

 with fulvous from nostril back to 

 eye; over and back of eye along 

 side of crown clear dark ashy. 



Post-ocular streak blackish with 

 very dark rufous edgings to feathers. 



Back dark chestnut with distinct 

 although small, black shaft-streaks 

 near ends of feathers. 



Chin, throat and malar stripe 

 white, washed with fulvous. 



Sides of neck and body olive 

 gray washed with fulvous, becoming 

 warm bistre brown on the flanks. 



Under mandible pale yellowish 

 horn color. 



A. rufescens pallida. 



Crown pale rusty rufous, the 

 median ashy streak obsolete and 

 the dark border on each -side of 

 crown merely indicated by a dark- 

 ening of the rufous of the center. 



Lores ashy. 



Superciliary stripe white from 

 nostril to eye, thence back along 

 crown dingy ashy. 



Post-ocular streak much lighter 

 and more rufous than in t}pical 

 birds. 



Back paler with the dark shaft- » 

 streaks nearly obsolete. 



Chin, throat and malar stripe 

 white. 



Sides of neck and body pale olive 

 gray, much ashier than in typical 

 birds, becoming somewhat warmer 

 and browner on the flanks. 



Under mandible dark bluish 

 horn color. 



Typical A. rufescens is a bird of the damper parts of east- 

 ern and southern Mexico ; the present form comes from Etzatlan, 



