LAGOPVS. 201 



Summer male : Above dark brownish gray, vermiculated and 

 coarsely spotted with black/many of the feathers tipped 

 with white; chest, upper breast, and sides similar, but 

 without the black central blotches to the feathers; head 

 and neck more coarsely barred with black, grayish white, 

 and pale grayish buff, the lores entirely black; throat, 

 wings (except tertials, etc.), belly, and lower breast white ; 

 under tail-coverts dusky grayish, tipped with white. Sum- 

 mer female : More coarsely barred with black and grayish 

 white, mixed with buff, the light bars on chest and under 

 tail-coverts more ochraceous. Sab. Newfoundland. 



303. L. welchi Brewst. Welch's Ptarmigan. 



c 2 . Summer males with upper parts very finely and densely vermiculated, 



the back and scapulars usually without black spots or blotches 



(never with these very conspicuous ?). 



d 1 . Summer male: Ground-color of upper parts deep umber-brown; 



chest barred with bright tawny brown and black, the lower 



portion frequently interspersed with uniform blackish feathers. 



Summer female : Not obviously different from the same sex of 



L. rupestris. Hab. Island of Unalashka, Aleutian chain. 



3026. L. rupestris nelsoni Stejn. Nelson's Ptarmigan. 

 (P. Summer male : Ground-color of upper parts pale raw-umber brown, 

 mixed with pale grayish ; chest and neck barred with pale 

 brownish ochre and black, the lower portion of the former 

 without admixture of dusky feathers. Summer female : 

 Ground-color of upper parts ochraceous, mixed with pale 

 grayish buff, narrowly and irregularly barred with black 

 (but with very little of black spotting), many of the feathers 

 tipped with white ; sides and flanks similar, but more regularly 

 barred, and without traces of spots ; chest and neck coarsely 

 barred with ochraceous and black. Hab. Island of Atkha, 



Aleutian chain 302c. L. rupestris a£khensis (Turner). 



Turner's Ptarmigan. 

 Tail white. 



Summer male : Above pale fulvous or dull grayish buff, coarsely ver- 

 miculated, barred, and irregularly spotted with black ; chest, upper 

 breast, sides, and flanks very heavily spotted (transversely) and 

 barred with black on a whitish ground, usually more or less mixed 

 with feathers having a pale fulvous ground and more narrowly 

 barred with black. Summer female: Similar, to male, but usually 

 more buffy(?). Fall male: Ground-color of upper parts pale fulvous 

 or tawny, mixed with grayish, finely freckled, vermiculated, and 

 irregularly barred with black, occasional feathers showing large 

 irregular spots of the latter color; middle tail-feathers partly or 

 entirely fulvous, finely freckled and vermiculated with dusky; 

 26 



