590 



U. S. p. K K. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



List of specimens. 



Locality. 



!When collected 



Rio Grande, Tex... Oct. 2, 1855 



Matamovas .- 



N.Leon, San Diego. Mar. — ,1853 



Mexico. 



Whence obtained. Grig. 

 No. 



A. Sdiott 



L. Bcilaudier ... 



Lt. Ccuch 118 



M. Verreaux 29883 



Length. 



Stretch 

 of wings 



11.00 I 14.26 



Wing. 



4.75 



Remarks. 



Eyes ilark Viiown ; 

 feet lead color. 



PERISOREUS, Bonap. 



Perisoreus, Bonap. Saggio di una dist. met. 1831. Type Corvus canadensis ? 

 Dysornithia, Swainson, F. B. Am. II, 1831, 495. Same type. 



Ch. — Feathers lax and full, especially on the back, and of very dull co'ors, without any blue. Head without distinct crest. 

 Bill very short ; broader tlian high. Culnien scarcely half the length of the head ; straight to near the tip, then slightly 

 curved ; gonys more curved than culmen. Bill notched at tip. Nostrils round, covered by bristly feathers. Tail about eijual 

 to the wings ; graduated. Tarsi rather short ; but little longer than the middle toe. 



This genus includes the sijecies of dullest colors among all of our jays. It has, too, the shortest 

 hill, and with this feature bears a very strong resemblance in many respects to some of the 

 titmice. 



The dates of the two names mentioned above are the same,'but as Gray finds Perisoreus to 

 possess actual priority I follow him in this, not having a copy of the " Saggio" at hand. 



PERISOKEUS CANADENSIS, Bonap. 



Canada Jay. 



Corvus canadetisis, Linn. Syst. Nat. I, 1766, 158.— Forster, Phil. Trans. LXII, 1772, 382.— Wilson, Am. Orn. Ill, 



1811, 33 ; pi. xxi.— BoN. Obs. 1824, No. 42.— Acd. Orn. Biog. IT, 1834, 53 : V, 1839, 208 ; 



pi. 107. 

 Garrulus canadensis, Eon, (Saggio, 1831.=) Syn. 1828, 58.— Swainson, F.JBor. Am. 11, 1831, 295.— Nuttall, Man. 



I, 1832, 232.— Add. Syn. 1839, 155.— Ib. Birds Amer. IV, 1842, 121 ; pi. 234. 

 Dysornithia canadensis, Swainson, F. Bor Am. II, 1831. Appendix. 

 Perisoreus canadensis, Eon. List, 1838. — Ib. Conspectus, 1850,375. — Cab. Mus. Hein. 1851, 219. — Newbeiirt, Rep. 



P. R. R. Surv. VI, IV, 1857, 85. 

 Garrulus fuscui, Vieillot, Nouv. Diet. XII, 1817, 479. 

 Pico nuchalis, Wagler, Syst. Av. 1827. Pica No. 14. 



Garrulus Irachyrrhynchus, Swainson, F. Bor. Am. U, 1831, 296 ; pi. Iv. Young. 

 " Coracias inexicanus, Temminck," Gray. 



Sp. Cii. — Tail graduated ; lateral feathers about one inch shortest. Wings a little shorter tlian the tail. Head and neck, 

 and fore part of breast white. A plumbeous brown nuchal patcli, becoming darker behind, from the middle of the crown to 

 the back, from which it is separated by an interrupted whitish collar. Hist ol'uppcr parts ashy plumbeous ; the outer primaries 

 margined, the secondaries, tcrtials, and tail feathers obscurely tipped with white. _Benealh smoky gray.^ Crissum whitish . 

 Bill and feet black. Length, 10.70 ; wing, 5.75 ; tail, 6.00 ; tarsus, 1.40. 



Hab. — Northern America into the northern parts of United States from Atlantic to Pacific ; more south in Rocky mountains. 



The young of this species are everywhere of a dull sooty brown, lighter on the middle of the 

 belly, and more plumbeous on tlie wings and tail. Witli increasing age the region about the 

 base of the bill whitens, and this color gradually extends backwards until the wliole liead, 

 excepting the occiput and nape, is white. The under parts are sometimes whiter than in the 

 typical specimens. 



