172 F.\LC0NIDJ2. 



4. Buteo erythronotus*. 



Haliaetus erythronotus, Kiny, Zoo/. Joiirn. iii. p. 424 (1827). 



Aquila braccata, Mcyen, Beitr. p. 05 (1834). 



Buteo varius, Gould, P. Z. S. 18-'37, p. 10 ; Danv. Voy. Bem/le, Birds, 



p. 20 (1841) ; Cass. U.S. Expl. Exp. Orn. p. 92, pi". 3. fig." 1 (1858) ; 



Scl. P. Z. S: 1800, p. 384. 

 Buteo tricolor, D'Orb. et Lafr. Syn. Av. p. 6 (1838); D'Ch-b. Voy. 



Am. Mcrid. pp. 09, 100, pi. 30 (c. 1840). 

 Buteo unicolor, UOrb. et Lafr. Syn. Av. p. 7 (18.38). 

 Buteo erythronotus, Danoin, Voy. Beayle, Birds, p. 26 (1841 ) ; 



Strickl. Orn. Syn. p. 34 (1855) ; Scl. P. Z. S. 18G0, p. 384, et Ibis, 



1860, p. 25, pi. 1. fig. 3; Abbott, Ibis, 1801, p. 151 ; Scl. ^ Salv. 



Nomencl. Av. Neotr. p. 119 (1873). 

 Hypomorphnus leucurus, Lafr. Rev, Zool. 1849, p. 388. 

 Poecilopternis erythronotus, Kattp, Contr. Orti. 1850, p. 76 ; Bp. 



Consp. i. p. 17 (1850). 

 Buteo bracchatus, Pelz. Verh. z.-b. Wien, 1802, p. 142. 

 Buteo polyosoma, Schl. Mus. P.-B. Buteones,p. 12 (1862) ; id. Revue 



Accijntr. p. 109 (1873), 

 Buteo albicaudatus, Scl. S,- Salv. P. Z. S. 1873, p. 186. 



Young. Above dark brown, the interscapulary feathers margined 

 ■with dark rufous, the margins ou the rest of the back and wing- 

 coverts rufous buff or pale rufous ; the scapulars, rump, and upper 

 tail-coverts also barred with the latter colours ; head dark brown, 

 the nape buffy white, with narrow brown streaks ; sides of head 

 behind the eye, ear-coverts, and sides of neck ochraceous buff, nar- 

 rowly streaked with dark brown ; lores and a narrow frontal line 

 white ; cheeks dark brown, forming a distinct moustache ; under 

 surface of body ochraceous buff, the throat thickly streaked with dark 

 brown, the breast largely spotted and narrowly streaked with the 

 same ; abdomen paler fulvous, irregularly barred and spotted with 

 rufous brown, the thighs and under tail-coverts triangularly barred 

 with pale rufous ; under wing-coverts ochraceous buff, with rufous 

 brown sx)ots, the greater ones white barred with ashy brown ; pri- 

 mary coverts and primaries ashy brown, with a clear shade of grey 

 externally, and crossed with narrow bars of dark brown ; secondaries 

 browner than the primaries, tipped with buff, and more numerously 

 barred; tail ashy grey above, ashy white below, whity brown at 

 tip, and crossed with fifteen or sixteen bars of ashy brown, disap- 

 pearing towards the base of the feathers. 



Advlt male. Above clear slaty blue ; quUls black, externally 



* The following has been thought to be the young of this species ; but from 

 the plate published it seems to me to be nearer to B. horealis. 



Buteo cooperi. 



Buteo cooperi, Casi. Pr. Phil. Acad. 1856, p. 263, and in Baird, B. N. Am. 

 p. 31, pi. 16 (1860) ; Cooper, B. Calif, p. 472 (1871) ; Coues, Key N. 

 Am. B. p. 216 (1872). 



Ilab. Santa Clara County, California. 

 Only one specimen known. 



