1909] The 1907 Alexander Alaska Expedition. 205 
of Glacier Bay, July 14; and one adult male (the type) and one 
full-grown but immature male (No. 318), taken at Bear Bay, 
Baranof Island, August 26. The four full-grown birds bear out 
well the above indicated characters, and with a uniformity usual 
in ptarmigan from one region, always of course presupposing on 
the part of the observer a strict attention to the stage of plu- 
mage and the tracts of which the feathers are a part. (See 
Dwight, Awk, XVII, April, 1900, pages 147-159, for a detailed 
study of the molts and plumages in the willow ptarmigan. ) 
The type is largely in the summer protective or tutelar plu- 
mage, but the post-tutelar molt has progressed so far as to render 
the lower breast and abdomen white. Only two old reetrices 
remain, while there are eight short new ones of varying lengths, 
the outermost bemg the longest. In this specimen, as in the 
three other full-grown birds, the dorsum is very dark, due not 
only to the depth of the brown coloring (almost burnt umber), 
but to the extension of the black on the centers of the individual 
feathers, so that the hazel barring is more restricted; and to the 
absence of the white terminal margins to the feathers, these be- 
ing replaced by buffy tippings or not represented at all. 
No. 318; from the same locality as the type, is a bird-of-the- 
year, largely in first protective, though showing remnants of the 
juvenal. This is even darker-toned as compared with correspond- 
ing stages of lagopus from the Kowak Valley, northern Alaska. 
No. 373, a male from Chichagof Island, June 25, is in nuptial 
plumage on the head, neck and chest, while on the back and sides 
a good deal of the tutelar has appeared. Again the dark tones 
are conspicuous. The foreneck is uniform deep rich burnt umber 
with a hazel tinge. 
The male from Glacier Bay (No. 357) is in magnificent full 
summer (tutelar) plumage over the whole body, save for a few 
white feathers in the posterior ventral region. Dorsally it shows 
an extreme of blackening, many of the feathers exhibiting large 
central black areas, with hehter barring at the edges only. The 
general effect of the whole back is of a black ground with fine 
irregular transverse hazel barring, and oceasional terminal edg- 
ings of pale ochraceous. The three adults are short-clawed, 
showing that these had undergone recent molt. The two young 
