42 NORTH AMKlilCAN UIKDS. 



crown feiitluTs with a narrow stroak ol" Mark, those on crown indistinct. Beneath dull 

 whiti', tin;,'e(l with ashy-<.<hra('coiis across the hrrast and alon<,' the sides; crissum pale 

 ociuaceoiis. An ohsolctt' hjrht siijM-nihary, and narrow thisky maxillary stripe. Bond 

 of win" Vi'llow ; h'sscr rovcrts tinjr«'d witli greenish-yellow. Li'MLrtli, <) inrh«s; wing, 

 2.0'); tail, 3.00; hill, .:>2 IVoni no>tril, .2.") dt'«-p at hjisc ; tarsns, .80; middle toe, .G3. 

 Hah. Los Xogales, Sonora, and Sontht-rn Arizona. 



This race lias a coiisidt'ialdo rrscinldance to P. nstivaJix, Imt differs in 

 some ai)i)ieiiaide points. The brown of the upper parts is paler, and thj 

 ashy edging to the leathers appears ratlier less exti-nsive. The dark brown 

 blotelies on the l»aek are of ^'reater extent, the blaek streaks on the baek 

 confined to a mere stniak along the shaft. There is less of an olive tinge 

 across the breast. 



The proportions of the present race differ more from those of aestivalis 

 than do the e(»lors, the bill being more slender, and the wings and tail con- 

 sideraldv Iniioer. 



The resemblance to J*, hntterii (= asflva/U, var. hotti rii) of Sclater, from 

 ^Middle Mexico (Orizaba, Colima, etc.), is very close ; the difference being 

 greater in the ])ro])urtiohs than in tlie colors, the latter having a shorter wing 

 and tail, with tliicker bill, as in var. ostiadU. In hotkrii there is rather a 

 predominance of the black over the rufous in tl\e streaks above. 



Hauits. This, in its general habits, nesting, eggs, etc., probably resembles 

 the variety a'Mivalvi. 



Feucsea cassini, Baird. 

 CAssnrs sparbow. 



Zonotrkhia caasiui, WoonnorsE, Pr. A. K Sc. Ph. VI, April, 1852, 60 (San Antonio). 

 PofiHercuhis cassini, WooDHorsE, Sitgreavos's Kep. Zuni and Colorado, 1853, 85 ; Birds, 

 pi. iv. Pexca-a cassini, Baiud, Birds X. Am. 1858, 485, pi. iv, f. 2, — Heebmann, 

 X, c, p. 12, pi. iv, f. 2. — CooPEK, Orn. Cal. I, 219 (not from Cal.). 



Sp. Char. (0.329 ^, Texas; compared with type of species.) Ground-color of 

 upper parts irrayish-ash ; the mifldle portion of each feather dull brown, in the form of a 

 blotch, and with a black shai>-streak. the latter becoming modifie<l on scapulars, rump, 

 and ui)per tail-coverts, into transverse spots, those on the upper tail-coverts being large 

 and conspicuous, and in the form of crescentic spot^, the terminal margin of the feathers 

 being lighter ashy in sharp contrast. Middle tail-feathers clear ashy, with a sharply 

 defined .shaft-streak of blackish, throwing off obsolete, narrow, transverse bars toward 

 the edge ; rest of tail clear dusky-brown, the lateral feather with whole outer web, and 

 margin of the inner, dull white, all, except the intermediate, with a large, abruptly defined, 

 terminal space of dilute brown (decreasing; in size from the outer), the margin whitish. 

 L'pper secondaries broadly and sharply margined along both edges with dull iushy-white, 

 the enclosed portion lieing clear dusky brown, intensified where adjoining the whitish. 

 A very obsolete superciliary stripe of ashy, becoming whitish over the lore ; auriculars 

 more dingy, but without distinct stripe along ujiper edge. An uninterrupted but indis- 

 tinct " bridle " along sides of throat. Lower parts dull white, without any ochraceous, 

 but with a very faint ashy tinge ever the jugulum ; flanks with broad, somewhat blended 



