253. 
254. 
255. 
874 SYSTEMATIC SYNOPSIS. —PASSERES — OSCINES. 
P. x. arizone. (Of Arizona.) Arizona SUMMER Fincu. With a general likeness to P. 
@stivalis, in pattern of coloration, streaking of all upper parts, similarity of back to crown, 
yellow edge of wing, and plain tail feathers; size same, wing and tail a trifle longer (as in 
illinéensis). Colors duller and less variegated ; maxillary stripes obscure or obsolete. Upper 
parts light dull chestnut or reddish-brown, moderately streaked with plumbeous-gray, but 
reddish the prevailing tone ; interscapular feathers, and sometimes those of the crown, with 
blackish centres; a poorly defined light superciliary stripe. Beneath, dull whitish, unstreaked, 
the breast and sides with a decided ochrey-brown tinge. Wings dusky, the inner secondaries 
darker and with more conspicuous rusty-brown edgings than those of the longer quills, and also 
some whitish edging or tipping. Bill blackish above, pale below; legs flesh color. Young: 
above, streaked with blackish and yellowish-gray, showing little reddish ; under parts more or 
less streaked with dusky. Western Texas, New Mexico, Arizona and southward. (This is 
what I meant by P. var. cassini of the orig. ed. of the Key; but true cassini is entirely differ- 
ent. Var. arizone is probably identical with Zonotrichia botterii Sel.) 
P. cas/sini. (To John Cassin.) Cassin’s Summer Fincu. Belonging to the estivalis 
group, with yellow edge of wing, and most resembling var. arizone; but perfectly distinct. A 
peculiar character of marking raises groundless suspicion of immaturity. ¢ 9, adult: Entire 
upper parts, from Dill to tail, alike in pattern of coloration —a peculiarly intimate variegation 
of ashy-gray, rufous-brown and blackish —the ruddy color occupying most of the feathers, 
which have a blackish central field and gray edging ; the blackish area on eaeh feather, espe- 
cially of the back, rump, and upper tail-coverts, where it is most conspicuous, being hammer- 
headed, or widened toward the end of the feather. Pattern of markings smallest on the cervix. 
No special head-markings, though there is a tendency toward a lateral hrowner band on the 
side of the crown, and browner post-ocular stripe, separated by a gray interval. Variegation 
of the upper parts descending on sides of neck; sides of head with some vague markings. 
Innermost secondaries showing quite blackish in the general field of the upper parts, and edged 
all around with a firm border of ashy-white or hoary-white. Greater and middle coverts exactly 
like the inner secondaries ; primaries similar, but the edging not so clear. Edge of wing clear 
-yellow, and some of the least coverts tinged with this color. Tail curiously particolored ; 
middle pair of feathers light grayish-brown, with a strong dusky shaft-line throwing off numer- 
ous dusky cross-bars, so that these feathers seem ‘‘ watered” with lighter and darker shades. 
Other tail-feathers, except the outermost pair, are dusky-brown, with pale grayish-brown 
terminal spots increasing in size from the inner feathers outward. On the outermost feather 
this pale gray space is very large, and rimmed all around with white. An indistinct maxillary 
stripe on each side of the chin. A number of strong well-defined dusky stripes on the flanks ; 
otherwise, entire under parts unmarked, and of a dingy whitish color, clearest on the belly and 
throat, more grayish on the sides and across breast. Bill brown, pale below; feet pale. 
Length 6.00-6.25; extent about 8.25; wing 2.50; tail 2.75. Young: Described as very 
similar, but with a few drop-shaped streaks on the jugulum and along sides ; feathers of upper 
parts with a more appreciable terminal border of buff. Texas to California, N. to Kansas, S. 
into Mexico. Habits, nest, and eggs as in P. e@stivalis (eggs pure white). 
P. ruficeps. (Lat. ruficeps, red-headed.) Rurous-cROWNED SumMER Fincu. Belonging 
to a different section of the genus, without any yellow on edge of wing as in the estivalis group 
and cassint. Lesser wing-coverts not chestnut as in P. carpalis. Strong maxillary streaks. 
& 2, adult: Crown bright chestnut, in perfect condition bright and continuous, blackening - 
on forehead, where divided by a short whitish line (whole cap thus as in Spizella socialis or 
Melospiza palustris); crown, however, oftener streaked with olive-ash, especially along a 
median dividing line, thus assimilating more nearly with colors of other upper parts. An 
obscure olive-ashy superciliary line, whitening over the lores. Back streaked with olive-ash and 
chestnut-brown, the latter sometimes distinct, as bold streaking with ashy edging of the 
