1910] Grinnell.—Birds: Alaska Expedition, 1908. 381 
Male——tThe light barring on top of head and hind neck more 
olivaceous than ashy; the white spots on lores, immediately in 
front of eye and behind eye, greatly reduced, only a trace of 
the latter being discernible; the scapulars and outer surface of 
closed wing with black markings better defined and light areas 
browner; the /\-shaped white terminal markings of the longest 
scapular feathers and “‘tertials,’’ not nearly so large, there being 
mere indications in some eases (I here take into account the effect 
of wear which certainly does remove a portion of the ends of 
the feathers everywhere, as is shown in those grouse taken in 
summer) ; light barring on lower back and rump, much less 
gray, more olivaceous; upper tail coverts with black predomi- 
nating over the gray and brown mottlings, the reverse being the 
case in osgoodi (the central portions of the feathers in atratus 
are solid black) ; tarsal feathering decidedly darker, more nearly 
sepia than broecol brown; sides with white wedges much nar- 
rower and shorter, ight markings more olivaceous. 
Female—tLight barring on top of head, hind neck, back, 
seapulars, rump and tail decidedly more ochraceous, and less 
ashy; black areas, especially as showing on outer surface of 
closed wing, more extensive on each corresponding feather, and 
white wedges more restricted; tawny barrings more ochraceous 
on throat, breast and sides; and black barrings everywhere be- 
low broader, and solid clear across each feather instead of being 
nearly or quite divided by the opposite encroachment of the light 
bars along the feather rhachis; tarsal feathering sepia instead 
of broccoli brown. 
DistriputTion.—The ten adult specimens and one downy 
young (these being the only examples at hand representative 
of the new form) are all from the Prince William Sound region: 
five from Hawkins Island (nos. 1179-1183), three from Hinchin- 
brook Island (nos. 1178, 1184, 1185), one from Hoodoo Island 
(no. 1186), one from Knight Island (no. 1188), and one from 
the western mainland near the head of Port Nell Juan (no. 
1187). The indications are that this form is generally distrib- 
uted in the humid coast belt from the eastern side of the Kenai 
Peninsula southwestwardly at least as far as Hawkins Island, 
and probably beyond. 
