FALCOXID-E — THE FALCONS. 2G5 



lihifkisli slat(>, iiiiiTou-ly paler al llic tij), and crossed willi nunierniis ol>lifiun Ijars of 

 (liisUy lilai'k; upiicr tail-covcrls liai'ivd olisoletrly with lii^htcr slal v-l)rc)\vii. Wiiii' 15.00; 

 tail. S.OO; tarsus, 'J.'-'O; middli' toe, l.'jO. l-'ourlli quill longest; third, next; second, 

 shoiter than lil'th; lirst, sliglitly shorter than eighth. 



Adn/I ft'iiKile (l'-',027, Tlah Valley, July; ('. S. McCarthy). Similar: lower tail-cov- 

 erts white, tiii.!i-(>d with rusty, and harrcd with hi'own ; tiliiie tinged with chestnut. Wine 

 10.50; tail, 8.S(); tarsus, 'J.IJO ; niidcUe toe, l.(J5. Tliird and fourth quills equal and long- 

 est ; third sliorter than lifth; lirst e(|nal to eighth. 



LIST or PPKCIMKNS KXAMIXliD. 



National Museum, 27: Philadelphia Academy, li ; Boston Society, 1; Museum, Cam- 

 hritlge, 1 : Cah. (I. N. i,awrence. -2; W. TJrewstc.'r. 1 : 1!. liidgw.ay, 5. Total, ,'!!). 



Mfdsiiremi'iil-''. 



Sex.< Wing. 



_ 



14.40-15.25 

 14.75- 1(>.,")() 



0.00- 



Ciilmen. Tarsus. 



.80 -.1)0 j 2.;50-2.()5 

 .80 -.95 ; 2.50-2.70 



IIab. Western regions of North America, ea.^t to the Mississippi Valley, north to the 

 Arctic regions ; Wisconsin ; Arkansas ; Canada ; Mass.achusetts. 



Localities: S. Texas (Dhksski!, Ihis, ISlJ.J. 324): Arizona (CocES?) ; fJnatemala (Scl. 

 Ibis, I, 210, •■ iiLiigimtim"). 



Tlic .yotiiig pluinao'c described above is the Butro haircU, Hoy, of authors. 

 The nuilaiii.stic pUimagc i.s B. iiiaiiiiuiins, ('a<5sin. 



Tlie y.miig bird.s of tlii.s species are as variable as the adults ; thus. No. 

 53,21U, (J, lias the fine ochraceous of the lower parts entirely free from 

 spots, except across tlie bretist ; on the ujiper parts tlie ochraceous spotting 

 is so extended as to alniosi prevail, while another, from the same nest, has the 

 black beneath exceeding the ochraceous, the tibiiv l)eiiig tliickly spotted, and 

 tlic lower tail-coverts liarred. lioth these s])ecimens lielong to a brood of 

 four, whicli were hardly able to fl\-, and were .shut, \\itli their ])arents, the 

 male of winch is the one described, while the female (Xo. 53,20G) is a very 

 dark exanqtle of infiifpiiifttfi, Cassia. 



The type of hairdi, and iinotlier Wisconsin s]iecimen, are in the collection 

 of the riiiladel])hia Academy. In plumage, tiiey are unlike any others I 

 liave seen, thougli there is as little resemblanct! between these two as l)e- 

 twecM any I have comi)ared. Dr. Hoy's type (Kaciue, Wi.sc., January, 18r)4) 

 differs from others, in exceedingly ])ale colors ; tlie cream-color lieneatli is 

 scarcely s]wtte(l, tiiero being only a fe»v tritingular sjiots and sliatl-lines of 

 l>lack on the sides; t'lo lining of the wing is entirely immaculate. Alio\e, 

 the black is unusually contimious ; the under surface of tlie jirimaries is 

 unusually white. Wing, lo.OO; tail, 8.00. 



The other specimen (IMenonomee :Mars]i, Milwaukee, Wise, spring of 1851) 

 is just the ojiposite extreme in plumage, being unusually dark, lor a young 

 bird. T'eneath, the black sjiots are so large as to nearly cover the whole 

 surface, wiiile the continuity of tlu bhick of the up]ier jiart is almo.st un- 

 broken. The head above, and nai)e, and broad "mustache" stripe from 

 Vol.. III. 34 



