FALCOXID.E ~ Till': FALCOXS. 



115 



the dark streaks iirodoniinato, while llio stripes belmv are very broad. It 

 apjjroaclies (juite nearly toward the yoiinj,' uf var. sdcrr. 



The only specimen of this race wliicli I have seen from Continental Xorth 

 America, is a yonng individnal, obtained during the winter of 1804-05, 

 near I'njvidence, II. I., taken by ]Mr. Xewton Pexter, and now in the Cam- 

 bridge Museum, where I had the pleasure of seeing it. 



LIST OF SPIX'IMKSS KXAMIN'KI). 



National Museum, .5; liostou Souioty, ?, ■, I'liiladulphia Academy, »; Coll. G. N. Law- 

 lenco, 2 ; Museum Comp. Zoiil., 1 ; New York Mu.seum, 5. Total, 2o. 



Viir. gacer, Forstefi. 



HacFARLANE'S GEBFALCON. 



Fa!co sneer, FoR.sTKlt, Phil. Trans. LXII, 1772, 383 and 423. —Coces, Birds of Now Eng- 

 land, 18ti8, G. — Baiui), Tran.s. Chicago Acad. Se. I, ii, 271. / Falen cincreu.s, Gmkl. 

 Syst. Xiit. p. 207, 178it. 



Sp. CirAK. Achlt (^,51,089, Yukon, mouth of Porcupine River; Straehan .Jones). 

 '^^ hole upper .surfaeo with numerous transverse bands of brownisii-phunbeous and ashy- 

 white. Anteriorly the li<rht bars are about half the wiilth of the dark ones; |iosteriorly 

 they gradually increase, the bands of the two colors bcinsr about of erpial width on the 

 upper tail-coverts and tail ; with the increase of the lipfhtei' bars, they become more ashy, 

 and, correspondintfly, the darker ones are more plumbeous : on the rump there is l)ut 

 little contrast In 'veen the bands of the two, causing a prevalent bluish cast. The bands 

 are everywhere .ntinuous, the light ones being interrupted only by the black shaft; 

 there are generally on the anterior portions about three light bars on each feather, the 

 last always terminal. Tail tippeil widi white, and crossed with etiual continuous bands 

 of hoary-plumljeous and ashy-white; the latter eleven in number, and finely spriidded 

 with deeper ash. Primaries brownisli-pluml)eous, plain pas' the middle portion, but on 

 the anterior half with quadrate spots of creamy white on the outer web. IK d above 

 brownish-plumbeous, this prevailing; but along the median line the leathers are edged 

 with bully white; forehead dull white, this continuing back in a streaked superciliary 

 stripe to the oceiimt ; cheeks very thinly marked with One streaks of dusky, this i)re- 

 vailing along the upper border of the ear-coverts; a deeper dusky sulfusion beneath the 

 anterior angle of the eye. Lower surface pure white : fliin and throat, only, inunaculate; 

 jiigulum with very .sparse, narrow longitudinal streaks of blacki.sh ; sides with scattered 

 cordate or nearly circular spots, these larger and transverse on the flanks and tibiir ; alido- 

 meii with .scattered minute elliptical .-;pots; lower tail-coverts with minute irregular 

 sagittate or transver.se spots of dusky. Under surface of the wing white; each feather 

 of the lining with a medial tear-.shaped streak of dusky ; primaries crossed with -row 

 bars of dusky, fifteen i.i number on the longest. Wing-formula, 2 -3 -4 - 1-5, Wing, 

 13.,50; tail, S.GO; culmen, .90; tarsus, 2.15; middle toe. 1.87. 



9 (4.3,139, Fort Ander.sou, May 24, 1804, ''9 and two eggs"; U. MacFarlane). 



