BRITISH COLUMBIA AND HYPOTHETICAL LIST. 973 
Occurrence in British Columbia.—As above: Vancouver Island specimens are doubt- 
fully referred to this form but they average lighter than those taken further north. 
Supposed Occurrence in Washington.—Doubtless the commoner form during the 
migrations but alleged difference in coloration not sufficient to arouse suspicion afield. 
B. C. & H. No. 7. 
WILSON’S WARBLER. 
A. O. U. No. 685. Wilsonia pusilla (Wils.). 
Description.—Similar to W. p. pileolata (q. v. p. 208) but averaging smaller; coloration 
duller, the upperparts more olivaceous, the yellow of underparts not so bright. Wing 2.16; 
tail 1.89; bill .32; tarsus .70. 
General Range.—Eastern North America west to eastern border of Great Plains, 
casually west to and into Rocky Mountains during migrations; breeding north of United 
States to Labrador, Hudson Bay and Manitoba; south in winter to Santo Domingo and 
eastern Mexico. 
Qccurrence in British Columbia.—The Black-capped Warblers undoubtedly shade 
into the duller form in the eastern portion of the Province during the migrations. Resident 
birds at Okanagan appear to be W. p. pileolata. 
Supposed Occurrence in Washington.—Probably casual during the migrations east 
of the Cascades. 
B. C. & H. No. 8. 
AUDUBON’S HERMIT THRUSH. 
A. O. U. No. 759a. Hylocichla guttata auduboni (Baird). 
Synonym.—Rocxy Mountain Hermit Turusu. 
Description.—‘Similar in coloration to H. g. sequotensis [g. v. p. 237] but decidedly 
larger” (Ridgway). Wing 4.00; tail 2.95; bill .58; tarsus 1.18. 
General Range.—Breeding in Rocky Mountain district of United States and British 
Columbia from Arizona northward; also westward to Lower California and Nevada; south 
in winter to Texas and the highlands of Guatemala. 
Occurrence in British Columbia.—Resident in the eastern portion of the Province. 
Supposed Occurrence in Washington.—Probably the resident form in Stevens County. 
B. C. & H. No. 9. 
LONG-TAILED CHICKADEE. 
A. O. U. No. 735 a. Penthestes atricapillus septentrionalis (Harris). 
Description.—Similar to P. atricapillus (q. v. p. 273) but averaging larger and with 
longer tail; coloration also clearer and brighter; white edgings of wings and tail broader 
and purer; black of cap rather more extensive; white of underparts purer. 
General Range.—Rocky Mountain region of United States and British Columbia. 
Cccurrence in British Columbia.—The resident form in the eastern part of the 
Province. The “island” of true atricapillus probably encroaches upon our southern borders 
but all my specimens have been labelled septentrionalis and have passed unchallenged in 
the East. 
Supposed Occurrence in Washington.—Probably the resident form in the mountain 
district of the extreme northeastern portion of the State. 
B. C. & H. No. ro. 
GRAY KINGBIRD. 
A. O. U. No. 445. Tyrannus dorsinicensis (Gmel.). 
Description.—Similar to T. tyrannus (q. v. p. 360) but larger; crown-patch as before 
but upperparts grayish plumbeous, merely darker on head; below white, shaded with ashy 
on breast and sides, under wing- and tail-coverts faintly tinged with yellow; wings and tail 
dusky, edged with whitish or yellowish, the tail barely touched on tip with whitish. Five o) 
Six outer primaries emarginate. Length 9.00; wing 4.50; tail 4.00; bill 1.00. 
General Range.—Florida and the West Indies, north occasionally to South Carolina; 
accidental in Massachusetts and British Columbia. 
Occurrence in British Columbia.—Accidental. A specimen was taken on Cape Beale 
