250 NOIITII AMEIilCAN BIRDS. 



Adult with llii^ l)lii(;kisli coiitinuous niiil uiiiforiii. Wiiiij, 12.35-14.50; 

 tail, 9.80-11.(10; ciiliiion, .'JO- 1.10; tiir.-iiis, 3.15-3.75; luiiKllc too, 

 1.05-2.00. Hub. iliikllo America, nortli into southern border of 

 Uniteil States var. harrisi. 



Parabuteo unicinctus, \!ir. harrisi (Ripgavayj. 



HABBIS S BUZZABD. 



F(i/eo liiirn'si, Arn. 15. Am. pi. ccc.xi'ii, 1831. — In. Orii. Bioj,'. V, 30. liiitm Imrriii, Arn. 

 SyiiDi). ]S;i!), 5. — IJoN.vi'. List, 3. — Di; Kav, Zoiil. X. Y. 11, 11. — t'raxiirx unicinc- 

 tut, vnr. Iiiirn'si, Kuxnv.vv, I'. A. N. S. I'liiliul. Dec. 1870, p. 142. Jiittco unicinctus, 

 var tiniTisi, C'ol'Ks, Key, 1872, 215. " Cnwin-c unicinctus, Te.mm." C'a.ss. liirils N. 

 Am. 1858, 46. — DliEssKlt, Ibis, 1865, 329 (To.\iis). — C'oUKs, 1'. A. N. S. 1866, 13 

 (Arizona). 



Si\ Cm Alt. Ailu!/ male (17,230, Cajw St. Lucas, Lower Calilbrnia: J. Xantus). General 

 ])lniiiago unil'ni-iii sooty-lilacli, |)\u'esl on the tail, soniewliat tinged with cliestnut on the 

 rump. Lesser winu-civorts and lateral half of each web of middle coverts, also the 

 tibiio, rich deep ehesiiuit. perfeetly iniiforni. U]iper and lower tail-coverts, and broad 

 i)asal and terminal zones of tail, pure white, the anterior band concealed (except on outer 

 feathers) liy the upper enverts, and about twice the width of the lasl, which is about 1 

 inch wide. Tail-eoverts with a i'vw irregular narrow sliaft-streaks of blackish. Lining 

 of wing deep chestnut, like the shoulders ; eacli greater covert with a black .shaft- streak; 

 primaries beneath plain black. Wing, 14.50; tail, 10.00; taivsus, 3.25 ; nnddlo toe, 2.00. 

 Fourth and liftli quills longest and equal : third coiisiderabi}' .shorter ; second intermediate 

 between si.xth and seventh; first, 3.40 shorter than longest. 



Adult frmnle (42.550, Iztlan, Jlexico; Colonel tira3'son). Generally similar to the male ; 

 the black, however, less pure and more brownish, the chestnut more extended, the whole 

 riinip being of this color, the last leathers merely being blackish in the middle. White of 

 tail-coverts without blackish stre.ak.s. AVing, 14.00; tail, 10.30; tarsus, 3.25 ; middle toe, 

 1.05. 



Immature mtde (second year. 50,703. Teiiic. Mexico; Colonel Grayson). T'^jippr ])arts 

 similar to adult, but less uniform; tlu' nape and back with feathers edged witli rusty ; 

 sides of head an<l neck very much streaked. Breast and abdomen light ochraceoiis, with 

 large longitudinal oval spots of black ; tibi.nc light ochraceous, with rather (hstant trans- 

 verse bars of dark rusty-brown; lower tail-coverts ochraceous- win U', with black shaft- 

 lines. Rufous on the wings more extended and more broken ; none on tin; rump. Ter- 

 minal band of tail narrower and le.ss .sharply defined than in adidt ; imier webs of primaries 

 with basal two-thirds white, irregularly mottled with dusky. " Iris chestnut-brown ; cere, 

 chin, and space round the eyes yellow." 



luiii.ilure female (second year, 15,200, Fort Buchanan, Now Mexico; Dr. Irwiu). 

 Black spots ticneath larger ami more irregularly defined; tibia? strongly barred with 

 dark rufous: ]iosteri(jr edge of liasal banil of tail much broken. 



IIaii. -Miildle, or northern tropical, America, from the Isthmus of Panama northward 



toe, l.tiO. Adult femulc (No. 13,907, Chile ; Lieutenant (iilliss). Similar to No. 13,908, but 

 the tibiiB more strongly Inured. Wing, 12.50 ; tail, 8.30. 



f!/)ccihinis cxaininn!. — National Museum, 9 ; riiiladelphia Aeadeniy, 9 ; lloston Society, 4 ; 

 New York .Museum, 1. Total, 23. 



Moisuivuinits.-^. Wing, 11.65-13.15; tail, 9.0(l-]0.]0; eidinen, .82 1.00; tarsus, 

 2.78-3.40; middle toe, 1.52-1.75. ,*<pceinien.s, 8. 9. Wing, 12.50- 14.60; Uiil, 9.20- 10.50 ; 

 I'tdmen, .90- 1.02 ; tarsus, 3.10-3.40 ; nuddle toe, 1.60 1.85. Speeimeiis, 0. 



