680 WASHINGTON HYPOTHETICAL LIST. . 
Occurrence in Washington.—Certain to occur during the migrations. I have narrowly 
observed Fox Sparrows which appeared under the binoculars to belong bere, but we have 
taken no specimens. ’ 
H. No. 3o. 
YAKUTAT FOX SPARROW. 
Not \. OU. Passeretla iliaca annectens Ridgway. 
Description.—‘Similar to P. i. msularts (q. v. p. a8) but smaller (the bill especially) 
and coloration slightly browner. Young much darker than corresponding stage of P. 4 
insularis” (Ridgway). 
General Range.—"Coast of Alaska from Cross Sound to Prince William Sound (to 
Cook Inlet); in winter south to California, 
Supposed Occurrence in Washington.—An adult female taken by Miss Jennie V. 
Getty at Kirkland in the winter of 1 9, has just been returned from Washington, D. C., 
bearing the label “Passerella iliaca meruloides.’ Having mislaid my copy of the Daily 
Taxonomic Bulletin 1 am unable (on the eve of coming from press) to precisely allocate 
this specimen but presume that it belongs near here. 
H. No. 31. 
ARCTIC TOWHEE. 
A_O. U. No. 588. Pipilo maculatus arcticus (Swains.). 
Description.—Similar to M. m. megalonyx (q. v. p. 160) but white markings on 
scapulars, wings, etc., more extensive, the black of back, etc., more strongly tinged with 
Seer: feet smaller with less developed claws, that of the hind toe not longer than its 
igit. 
General Range.—"Central region of N. Am., from limit of erythrophthalmus in Kansas, | 
Nebraska, and Dakota, to that of oregonus in Oregon, Washington and British Columbia; 
N. in summer to the region of the Saskatchewan; S. in winter to Texas; in the S. Rocky 
Mt. region melting into megalonyx” (Coues). 
Occurrence in Washington.—The doctors disagree as to the precise northern limits of 
megalonyx, and it may well be that specimens from the northeastern portion of the State 
should be entered as arcticus. 
H. No. 32. 
PALE VARIED THRUSH. 
A. O. U. 763a. Ixoreus naevius meruloides (Swains.). 
Description.—Said to differ from /. naevius (q. v. p 248) only in the lighter coloration 
of the female. Alleged to be the breeding form from the northern interior of Alaska. If 
the subspecies is valid it undoubtedly occurs in Washington during migrations. 
H. No. 33. 
CHESTNUT-BACKED BLUEBIRD. 
A. O. U. No. 767 a. Sialia mexicana bairdi Ridgway. 
Description.—Similar to S. mexicana (q. v, p. 254) but back of adult male pure chest- 
nut in contrast with surrounding blue. 
General Range.—Rocky Mountain region south to Mexico. 
Supposed Occurrence in Washington.—Dr. J. C. Merrill, writing from Fort Sherman, 
Idaho, enters the local Bluebirds as bairdi. Specimens from our northeastern border are 
undoubtedly transitional but it is perhaps well enough to regard our eastern line as the 
arbitrary limit of occidentalis. 
H. No. 34. 
ROCKY MOUNTAIN NUTHATCH. 
A. O. U. No. 727¢. Sitta carolinensis nelsoni Mearns. 
Description.—“Similar to S. c. aculeata (q. v. p. 287) but larger, with stouter bill; 
underparts less purely white, more strongly shaded with pray on sides and flanks; white 
subterminal spaces on lateral rectrices larger” (Ridgway) 
General Range.—Rocky Mountain district south to northern Mexico. 
Supposed Occurrence in Washington.—May well prove to be the resident form on 
Stevens and adjacent counties. 
