AVES FALCONID^e. 643 



and rusty margins and edges; the whole of this part of the wing appears 

 mottled slaty, seal and clear rusty red ; lower wing-coverts and axillaries 

 white, barred with clear rusty red and with some bars clearly double in 

 color, a line of rusty and a line of deep seal-brown conjoined into a narrow 

 bar; a few of the terminal under wing-coverts have clear slate bars. 



Lower parts : The chest and upper breast clear huffy white ; the rest of 

 the under surface buffy white, barred clearly and definitely with bright 

 rusty red ; this becomes faint and obsolete on the vent and almost disap- 

 pears on the under tail-coverts, which are buffy white ; on each side of 

 the breast there is an area of clear rusty red, the feathers being so heavily, 

 but irregularly, marked with that color on a buff white ground, as to form 

 a band ; the sides and flanks as well as the thighs arc buffy white, clearly 

 barred with bright rusty red. 



Bill and cere : Horn-blue (J. B. Hatcher). 



Feet: Feet and legs bright yellow (J. B. Hatcher). 



Iris: Pale yellow-brown (J. B. Hatcher). 



The other bird, No. 7870, is similar, but the colors are better defined ; the 

 crown is deep seal-brown ; the moustachial streak almost black ; the red 

 of the back and scapulars is brighter and the mottling on these feathers is 

 deep seal-brown ; the markings on the tail are more definite ; seen from 

 above, the subterminal band is more definite than in 7868 ; the barring 

 and shading of the feathers is clearer ; from below, the tail is clear white, 

 with a broad subterminal band (three-fourths of an inch) black and a 

 terminal band of white of about the same width ; the throat is buffy white 

 and the breast and chest rusty white ; the barring beginning on the lower 

 breast is very clear deep seal ; this is on the breast suffused by the rusty, 

 but bars on the abdomen, flanks and thighs are on a pure white ground 

 and clear ; the under tail-coverts are rusty, barred with a deeper rusty 

 shade; "eye bright yellow" (J. B. Hatcher); bill blue-horn and feet and 

 legs dull green-yellow (J. B. Hatcher). 



Immature birds and young of the year. No. 7864, malejuv., P. U. O. C. 

 Rio Chico, Cordilleras of Patagonia, i8th March, 1897, J. B. Hatcher. 



Head: Top of head dark seal-brown; the lores and forehead white; 

 region behind the eye and ear-coverts deep buff, with narrow dark brown 

 stripes; cheeks dark seal-brown, forming a distinct moustache; the feathers 

 of the crown with cottony white bases. 



Neck : Deep buff on throat and under neck ; the throat heavily streaked 



