322 PATAGONIAN EXPEDITIONS: ZOOLOGY 



Culmen, 1.2 inch. 



Tail, 2.45 inches. 



Tarsus, i.i inch. 



The sexes do not differ appreciably in size, but there is a marked dif- 

 ference in this respect in individuals, indicated by a maximum length of 

 9.5 inches and a minimum length of 8 inches, and a corresponding ratio 

 in other parts. 



Color. — General color above light clay or buffy brown, broadly striated 

 with dusky or blackish. Below, white with a broad pectoral band extend- 

 ing well onto the fore-neck, light greyish buff, broadly streaked with 

 dusky or blackish. 



Head : Crown dusky brown, each feather margined with dusky greyish 

 buff with indications of rusty or rufous. Forehead and sides of the head 

 and face dusky greyish buff, each feather with a median streak of dusky or 

 blackish. The loral region paler, almost or quite white. A rather obscure 

 eyebrow stripe of buffy like the forehead. 



Neck : Above dusky greyish buff, each feather with a median stripe of 

 dusky brown or blackish. Below chin and throat white. The rest of 

 the lower neck and the sides of the neck, dusty greyish buff broadly 

 streaked with blackish, the streaks becoming broader and arrow shaped as 

 the region of the breast is approached. 



Back : Light dusty buff or clay color with a suggestion of rusty, each 

 feather with a broad dusky or blackish central area, giving to the whole 

 a streaked effect. Lower back and rump and upper tail coverts more uni- 

 form dusky, the feathers only slightly margined with buff. 



Tail : Central rectrices blackish, the remaining ones dusky greyish, 

 narrowly margined and tipped with white. 



Wings : Lesser wing coverts dull brown, the median coverts brown 

 with darker centers and dusty fulvous or buffy margins. Greater coverts 

 dusky brown with fulvous, buffy or whitish ending and tips. The bas- 

 tard wing dull brown ; primary coverts blackish, the inner ones tipped 

 with white. Quills deep brown, paling on their inner webs and the first 

 primary with the shaft ivory white almost to the tip. The shafts of the 

 succeeding quills decreasing ivory white until the shafts of the inner quills 

 are brownish. 



Lower Parts : White, except for a broad pectoral band of ashy brown, 

 each feather fringed with buffy, giving the terminal portion of the ashy 



