312 PATAGONIAN EXPEDITIONS: ZOOLOGY 



Tail : Greyish, barred evenly with dusky or blackish brown. The outer 

 feathers lighter in ground color, and barred more profusely and distinctly. 



Wings : Upper coverts like the back in general appearance. The quills 

 blackish, the inner ones paler and the innermost secondaries much like the 

 back and longer coverts. Shaft of outer primary white, the rest brownish. 



Under parts white. The breast profusely decorated with sagittate mark- 

 ings of blackish, the sides and flanks barred with the same color. The 

 under surface of the neck, except the white chin and upper throat, broadly 

 streaked with blackish. Under tail coverts definitely barred with black- 

 ish. Under wings and axillaries barred black and white, the barring on 

 the under wing coverts following the outline of the feathers. 



Legs, bright yellow. 



Feet, bright yellow. 



Claws, brown. 



Iris, hazel brown. 



Fig. 159. 



Totatms melanoleucus. Adult in winter. P. U. O. C. 5807. One third natural size. 



Adults in winter are light ashy grey in tone and not blackish. Above 

 they are decorated with greyish and white much as in the breeding dress 

 and the lower rump and upper tail coverts are white with blackish bar- 

 ring. Below the streaking on the lower throat and neck is much narrower, 

 and all the markings on the breast and sides are much reduced in size if 

 not obsolete. The wings and tail are much as in summer, as are the 

 under tail coverts, the lower wing coverts and axillaries. 



Young birds of the year are much like winter adults but are browner, 

 with less admixture of greyish or white above. The central rectrices and 

 the head and back being nearly uniform, almost without any white or grey- 



