284 NORTH AMERICAN BIRDS. 



SuptTcilijiry stn-ak sharply (U'I'iiumI, conspicuous. Wing, Ti.OO; 

 tail, '>JJO; l»ill, l.'JO and .;J7 ; tarsus, 1.5'); middle toe, .U.'i. Wincr- 

 forinula, 4. '), 0. 7, 3, 8, 9, 2, 10; first, 'J.lO shorter than longest. 

 Graduatii»n of tail, l.ir>. Hub. racitic I'rovince of L'nitcd States; 



Capi I.Lucas . var. calif ornicn. 



B* Tail not longer than wings, or consideraMy shorter. No superciliary 

 stripe, and no streaks on throat or juguhnn. Aurieulars l»luc like the crown. 



C. ultramarina. Lttwcr parts whitish, conspicuously dillerent from the 

 upper. 



Tail nearly, or perfectlij even. 



Length, 13.00; tail even ; bill, l.r>0 : tail, 7.00. Hah. Mexico. 



var. u It ram a r i n a } 



Length, 11.50; tail very slightly rounded (graduation, .25 only); 

 bill, 1.28 and .35; tail, 50. Above bright blue, dorsal region 

 obscured slightly with ashy ; beneath dull pale ash, becoming 

 gradually whitish posteriorly, the crissuni being pure ash. Lores 

 blue. Tarsus, 1.45 ; middle toe, .95. Wing-formula, 5, 4 = 0, 7, 

 3, 8, 9, 10, 2 ; first, 2.10 shorter than long*-. Graduation of tail, 

 .25. Hah. Lower Rio Grande var. couchi. 



Tail considerably reminded. 



Colors as in couchi, but dorsal region scarcely obscured by ashy. 

 Lores black. W'ing, 7.50 ; tail, 7.50 ; bill, 1.30 and .40 ; tarsus, 

 l.GO ; middle toe, .90. Wing-formula, 5, 4, 6, 3= 7, 8, 9, 2 ; first, 

 2.75, shorter than longest. Graduation of tail, 1.15. Hah. Mexico 



(Orizaba, Mirador, etc.) var. sordida.^ 



Graduation of the colors as in sordida, but the blue, instead of 

 being a bright ultramarine, is very much paler and duller, and with 

 a greenish cast, the whole dorsal region decidedly ashy ; ash of the 

 pectoral region much paler, and throat similar, instead of decidedly 

 whitish, in contrast ; pure white of posterior lower parts covering 

 whole abdomen instead of being confined to crissum. Wing, 6.20 ; 

 tail, 5.70; bill, 1.30 and .40; tarsus, 1.50; middle toe, .97. "Wing- 

 formula, fourth, fifth, and sixth equal ; 7, 3, 8, 9, 2 ; first, 2.20, 

 shorter than longest. Graduation of tail, .50. Hab^ Southern 

 Rocky Mountains (Fort Buchanan, and Copper Mines, Arizona). 



var. arizonce. 

 C. unicolor.' Lower parts bright blue, like the upper. Entirely 



ferred to this race, but which differs in such an important respect from all other specimens of 

 the several races referrible to califomica, as extended, that it may belong to a distinct form. 

 Having the precise aspect of sumichrasti in regard to its upjx^r plumage, it lacks, however, any 

 tmce of the blue edgings and pectoral collar, the whole lower parts being continuously uninter- 

 rupted tluU white, purer posteriorly. The appearance is such as to cause a suspicion that it may 

 be a link between sumichrasti and one of the races of ultramarina. It measures : wing, 5.50 ; 

 tail, 6.00 ; graduation of tail, .70. 



1 Cyanocitta ultramarina, (Boxap.) Strickland. — Garrulus ultramarinus, Bonap. J. A. 

 N. S. IV, 1825, 386 (not of Audubon). 



■■* Cyanocitta sordida, (Swains.) (not of Baird, Birds N. Am., which is arizo7ia;). — Sclater, 

 Cat. Am. B. 1862, 143. Garruhis sordidus. Swains. Phil. Mag. 1827, i, 437. 



* OyaTWcitta unicolor, (Du Bus) Bonap. Consp. p. 378. — Cyanocorax unicoloTj Du Bus, 

 Bull. Acad. Bmx. XIV, pt. 2, p. 103. 



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