RHYACOPHILUS. 131 



notched with white; lateral feathers white, barred with blackish, these 

 bars becoming irregular on lateral feathers and reduced to a few freckles 

 on outermost ones ; feathers of crown and hind neck almost uniform ashy 

 brown, slightly mottled with darker brown centers; lores dusky, sur- 

 mounted by a distinct white eyebrow ; sides of face white, slightly streaked 

 with dark brown; ear-coverts uniform dark brown along their upper 

 edge; cheeks and throat white; sides of neck, lower throat, fore neck, 

 and chest ashy, varied with shaft-lines of brown; remainder of under 

 surface pure white ; sides of upper breast ashy brown ; lateral under tail- 

 coverts with blackish shaft-streaks and a few f recklings of black; under 

 wing-coverts white, mottled with blackish bases ; axillars white, with a 

 few irregular bars and freckles; lower primary-coverts and quills below 

 dusky brown, with whitish spots on the edges of the inner secondaries. 

 'Basal half of bill olive-brown, terminal half black; legs and feet pale 

 greenish; claws dark horn-color; iris brown/ (Oates.) Length, 216; 

 culmen, 29 ; wing, 12 ; tail, 47 ; tarsus, 35. 



"Adult female. Similar to the male. 'Bill blackish, olive at the base 

 of lower mandible ; feet olive ; iris very dark brown.' (Butler.) Length, 

 203; wing, 124; tail, 48; culmen, 28; tarsus, 38. 



"Adult male in summer plumage. More variegated than in winter, 

 the back being uniform dark brown, with large notches of white on both 

 webs, and having very distinct white edges to scapulars and inner wing- 

 coverts; long upper tail-coverts barred with dusky blackish and resem- 

 bling the center tail-feathers; head and neck streaked with white; sides 

 of face, lower throat, and fore neck very distinctly and broadly streaked 

 with blackish brown centers to the feathers; sides of body and under 

 tail-coverts mottled with cross-bars of blackish brown; the axillars 

 narrowly barred with blackish brown. 'Bill blackish olive, below at base 

 lighter brownish olive; feet light grayish olive; iris dark brown.' 

 (Stejneger.) Length, 178 ; culmen, 33 ; wing, 124; tail, 47 ; tarsus, 35. 



"Young after first molt. Differs from the adults in being closely 

 spotted on the upper surface, but the spots more or less rufescent; lower 

 throat and chest ashy as in the winter plumage of the adults, but the 

 dusky brown stripes very distinct and invading sides of body; axillars 

 pure white, or with the merest trace of brown frecklings. 'Bill dusky 

 brown, inclining to greenish olive toward base; feet greenish olive, iris 

 blackish brown/ (Butler.) 



"In the breeding season the white spots on the upper surface become 

 much worn and abraded, so that the general appearance of the back is 

 very uniform; the mottling on the fore neck and chest becomes very 

 distinct by reason of the abrasion of the white margins of the feathers, 

 and the axillars are completely barred across with brown." (Sharpe.) 



