AVES — DENDROCOLAPTID^. 779 



paler, three outer ones with tawny white diagonal terminal spots, involving 

 most of the outermost ; under side pale ochraceous, darker on the breast 

 and flanks, whiter on the throat, throat and breast with minute dusky spots, 

 a large pale fulvous spot on the upper throat, wings dull brown with a 

 diagonal fulvous band across the middle, with paler areas on the outer webs 

 of some of the primaries, a black band next to the fulvous one and tertials 

 black with a buff border. 



Geographical Range. — Chili and Patagonia to the Falkland Islands. At 

 Lake Nahuel Huapi Mr. Peters found it uncommon, wary and with secretive 

 habits. Obtained by the Princeton Expedition at Arroyo Eke, in May. 



SiPTORNis HUDSONi (Sclatcr). 



Synallaxis Imdsoni^cXdXtx, P. Z. S. 1874, p. 25 (Conchitas). 

 Synallaxis ^r/^/m Cabanis, J. F. O. 1868, p. 196 (Argentine Republic). 



Description. — Adult female, 283868 Biol. Survey, U. S. Dept. of Agri- 

 culture, Lavalle, Buenos Aires, Argentina, November 9, 1920, Alexander 

 Wetmore. Total length, 6.30 inches ; wing, 2.75 ; culmen, .58 ; tail, 2.82 ; 

 tarsus, .92. Feathers of the upper surface black in the center with buffy- 

 brown wings, those of the back and the tertials with additional silvery gray 

 edgings, base of the secondaries tawny, making a definite patch on the wing ; 

 a streak of the same on the outer web of the tertials ; tail feathers black, 

 the three outermost pairs more or less tawny and edged with gray, the 

 middle pair largely gray, the black area restricted to a narrow shaft streak, 

 below buffy white, flanks darker with black shaft streaks ; throat spot 

 orange tawny. 



Another female has the throat spot lemon yellow with minute black 

 tips to the feathers. 



An immature bird is more strongly buff below with black shaft streaks 

 on the breast and smaller ones on the abdomen. 



Geographical Range. — Uruguay and Argentina to extreme northern 

 Patagonia. 



Peters found it rare in the regions visited by him on the Rio Negro and 

 Rio Colorado. Durnforth reports it from the Chuput Valley. 



Subfamily Philydorin^. 



Sclater, Cat. Bds. Brit. Mus. xv. p. 74 (1890); Sharpe, Hand-List Bds. 

 iii. p. 62 (1901). 



