640 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



feather and the upper tail-coverts, like the rump, white barred with slate, 

 except the outer ones, which are immaculate. 



Tail : White ; crossed by nine or more wavering bars of ashy slate, with 

 a subterminal band of black an inch wide and a terminal white bar half an 

 inch wide. Seen from below, the tail is immaculate, save for the broad 

 subterminal band of black. 



Wings : Four outer primaries with the inner webs distinctly emarginate. 

 The primaries black at their extremities for from two to three inches, the 

 exposed outer web shaded throughout with silvery grey, and the inner 

 webs, for all but the extremities, ashy, shading into pure white and barred 

 with eight or more definite dark ashy bars ; the secondaries slaty, like the 

 interscapular region, with rather broad white tips, an obscure subterminal 

 band and eight or more obscure bars of deep ash ; the inner secondaries 

 not tipped with white ; all the coverts slaty-grey, clear in tone like the back, 

 with black lines down the center from the black shafts and obsoletely 

 barred and marked with deep ash ; scapulars like the back ; under wing- 

 coverts white, with narrow ashy barring at wide intervals ; the axillaries 

 more strongly barred with clear slate, which color predominates here. 



Lower parts : All pure silvery white ; on the sides faint barring of clear 

 slate, otherwise immaculate ; no barring on the thighs or under tail-coverts. 



Bill: Slate horn-color (Hatcher). 



Cere: Dark yellowish green (Hatcher). 



Iris: Deep hazel-brown (Hatcher). 



Feet: Feet and legs bright yellow (Hatcher). 



Adult female, P. U. O. C. 7947. Arroyo Eke, near Cape Fairweather, 

 Patagonia, 16 May, 1898. A. E. Colburn. 



Size. Length, 24.00 inches; wing, 16.25 inches; culmen, 1.50 inches; 

 tail, 9.50 inches; tarsus, 3.75 inches. 



Color. Similar to the adult male, but the slate is darker and more 

 shaded with brownish. The upper neck and whole interscapular region 

 and some of the shorter scapulars bright rusty red, the feathers slightly 

 tipped with slate and hair-lined down their centers by the shining black 

 shafts. The white of the lower parts barred in wavering lines with deep 

 ash, as are the exterior upper tail-coverts. 



Mr. Hatcher collected two specimens. No. 7868 P. U. O. C is labelled 

 J 1 ? and was taken at or near Coy Inlet, Patagonia, September 16, 1896 

 (J. B. Hatcher). It measures far under the standard of the smallest 



