27. BUTKo. 189 



secondaries barred with brownish ; tail brown, slightly washed with 

 rufous, tipped with whitish and crossed with nine bars of darker 

 brown ; under surface of body pure white, the chest entirely so, the 

 throat narrowly streaked with dark brown, a little broader on the 

 breast, and inclining to arrow-shaped spots on the flanks and 

 abdomen ; under tuil-coverts pure white ; thighs white, with small 

 transverse spots of pale rufous ; under wing-coverts white, with a 

 few spots of dark brown. 



Male. Uniform brown, the greater coverts lighter and varied with 

 whitish spots and bars ; upper tail-coverts huffy white, with rufous 

 brown cross bars ; tail uniform tawny rufous, tipped with buffy 

 white, and crossed mth a subterminal band of blackish brown ; sides 

 of face uniform brown like the head ; under surface of body whitish, 

 the breast streaked and the abdomen mottled with bars of dark 

 brown ; cere and gape greenish yellow ; bill bluish black ; feet 

 yellow ; iris pale amber. Total length 21 inches, culmen 1'55, 

 wing 15-4, tail 8-5, tarsus 3-6. 



Adult female. Larger than male. Total length 25 inches, wing 

 ]7"5, tail 9-5, tarsus 3-8. 



Hub. Eastern States of North America, extending to Cuba, Jamaica, 

 and the "West Indies. 



Subsp. a. Buteo montanust. 



Buteo montanus, N'ldt. Man. i. p. 112 (1833) ; Cass, in Baird's B, 



N. Am. p. 26 (1860) ; Gray, Hand-l B. i. p. 7 (1869) ; Cooper, 



B. Calif, ed. Baird, p. 469 (1871). 

 Buteo calurus, Cass. Pr. Phil. Acad. 18.55, p. 281 ; Strickl. Orn. Syn. 



p. 38 (1855) ; Cass, in Baird's B. N. Am. p. 22, pi. 14 (1860) ; 



Gray, Hand-l. B. I p. 7 (1869) ; Cooper, B. Calif, ed. Baird, p. 471 



(1871). 



Young (with tufts of down still adhering to tips of tail-feathers). 

 Above dark brown, the head and nape streaked with deep rufous 

 ochre, with which also the dorsal feathers are slightly, and the 

 scapulars and wing-coverts conspicuously margined ; small coverts 

 terminally spotted and the greater series plainly half-barred with 

 white ; feathers of lower back and rump margined with rufous ; 

 upper tail-coverts broadly barred with brown and white, the latter 

 often tinged with rufous on inner web ; tail sepia-brown, plainly 

 tipped with white and crossed with nine bars of darker brown ; 



* Collected during the Northern Land Expedition. 



+ Another subspecies not seen by me is Buteo leucasanus, Ridgway, in Coues's 

 Key, p. 216 (1872). Hab. Cape S. Lucas. 



