112 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



of the outer web, the very base itself white ; cheeks and auriculars light 

 ochraceous-buff sparsely flecked with dusky fuscous; chin whitish mixed 

 with light ochraceous-bufif, which color without the white extends over 

 the throat as well, the throat feathers with narrow terminal dusky shaft 

 streaks; breast, sides, flanks, thighs, under tail coverts, and all but 

 the median part of the abdomen .bright ochraceous-buff barred with clove 

 brown to fuscous, the dark bars narrower than the paler interspaces and 

 becoming more widely spaced posteriorly; middle of abdomen, some of 

 the under tail coverts, and the feathering of the tarsi and toes white ; bill 

 and claws black. 



Adidt male, autumn plumage. — Above like the summer plumage but 

 much more ochraceous, the back without any ashy feathers and with the 

 black markings deeper and broader especially on the rump and upper 

 tail coverts and also the upper wing coverts ; below quite different from 

 the summer plumage; chin, throat, and sides of head and of neck ochra- 

 ceous-buff, the feathers crossed by narrow bars of fuscous, the dark bars 

 much narrower than the buffy interspaces; lower throat, breast, upper 

 abdomen, sides, flanks, and under tail coverts somewhat darker, between 

 clay color and dark ochraceous-buff finely banded and vermiculated with 

 clove brown to fuscous, the dark bars becoming broader on the sides, 

 flanks, and under tail coverts; middle of abdomen and thighs white, 

 feathering of feet much sparser than in summer plumage. 



Female, autumn plumage. — Like the corresponding plumage of the 

 male but paler and slightly bufifier, less rufescent. 



Adult male, winter plumage.- — Completely white except for a black 

 loreal stripe which continues for a short distance behind the eye; and 

 for the tail feathers, which are dark clove brown narrowly tipped with 

 white; feathering of the tarsi and toes much denser and longer than in 

 summer plumage. 



Adult jemnle, winter plumage. — Like that of the male but without the 

 black loreal stripe. 



Other plumages apparently unknown. 



Adult male.— Wing 181-196 (188) ; tail 98-113 (104) ; culmen from 

 anterior end of nostril 9-10.5 (9.8) ; width of bill at gape 12.1-13.5 

 (12.7) ; height of bill at angle of gonys 7.3-8.2 {7.7 mm.).^^ 



Adult female.— Wing 169-180 (175.3) ; tail 93-98 (95.5) ; culmen from 

 anterior end of nostril 8.4-9.4 (8.9) ; width of bill at gape 11-12.4 (11.6) ; 

 height of bill at angle of gonys 7-7.6 (7.3 mm.).^^ 



Range. — Inhabits Kiska and Little Kiska Islands in the Aleutians, 

 Alaska. 



Type locality. — Kiska Island. 



" Sixteen specimens from Kiska and Little Kiska Islands. 

 ^ Four specimens from Kiska and Little Kiska Islands. 



