6l2 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



Tail, 8.2 inches. 



Tarsus, 4.2 inches. 



Color. — Adult male. 



Head : Rufous, shading into whitish on the lores ; and into ashy grey on 

 the sides of the face and the ear-coverts. 



Neck : Rufous, shaded on the throat with ashy ; the upper neck shading 

 into the color of the interscapular region, and the lower or under neck into 

 the breast color. 



Back : Interscapular region pale, slaty grey, each feather margined and 

 tipped with rufous ; lower back, rump and upper tail-coverts blackish ; the 

 upper tail-coverts glossed with deep purple and tipped with white. 



Tail : Dull blackish, washed with purple, mottled and suffused with 

 rufous at the base, with a broad white band across the middle of the tail 

 and a much narrower terminal band of pure white. 



Wings: Scapulars pale, slaty lead-color, or greyish, each feather margined 

 with rufous ; lesser wing-coverts bright rufous ; the rest of the coverts slaty 

 lead, with broad rufous tips, the median series margined beside with the 

 same color ; the quills rufous ; the primaries becoming black toward their 

 extremities, and the secondaries with a conspicuous subterminal band or 

 bar of purplish brown, deep in tone ; the inner secondaries are wholly this 

 color ; under wing-coverts and axillaries uniform bright rufous. 



Lower parts : Breast and abdomen, as well as the sides and thighs, rufous, 

 with more or less distinct narrow barring throughout (there is great indi- 

 vidual difference in birds, all apparently adult, in this barring ; it is almost 

 obsolete in some, showing plainly only upon the breast, while in others it 

 includes, as in the bird from which the black and white drawing was made, 

 clear barring extending even to the thighs, where it is as plain as at any 

 other part; often the thighs are immaculate); the lower tail-coverts gener- 

 ally immaculate bright rufous, but occasionally showing traces of narrow, 

 obsolete blackish bars. There are no field notes as to the color of the bill, 

 the cere, the irides or the legs and feet. 



The adult female is like the adult male in appearance, but notably 

 larger; length, about 24.50; wing, 18.40; tail, 10.2 inches, and tarsus, 

 5.00 inches. 



Immature birds and young of the year: Dusky or blackish above; the 

 dark feathers of the crown decorated with notches and bars of deep rufous ; 

 the crown defined by a more or less conspicuous supraciliary stripe of 



