POLYBORUS. 253 



tinged with orange-rufous, or salmon-color. Male: 

 Wing 6.80-7.30, tail 4.90-5.20, culmen .46-.51, tarsus 

 1.30-1.45, middle toe .90. Female: Wing 7.00-7.60, 

 tail 4.70-5.60, culmen .50-.52, tarsus 1.40, middle toe 

 .91. Hah. Cuba and Haiti. 



F. dominicensis Gmel. Haitien Sparrow Hawk." 

 d}. Back rufous only in the female and young male, plumbeous or 

 dark bluish gray in adult male ; breast, etc., deep rusty or 

 rufous ; foi'ehead and ear-coverts dusky. 



Adult male : Above, except tail, entirely dark plumbeous, or 

 , slate-gray, or else chiefly of this color; a blackish collar 



across hind-neck ; breast and sides deep rufous, sometimes 

 inclining to chestnut ; throat grayish white, or light gray- 

 ish ; inner webs of quills grayish, transversely clouded or 

 mottled with dusky. Young male: Similar to adult, but 

 back and scapulars mixed with more or less of rufous, 

 rusty of breast paler, etc. Adidt female : Lower parts 

 deep rusty ; inner webs of quills rusty, marked with about 

 twelve transverse bars or narrow spots of dusky. Male : 

 Wing 6.90-7.10, tail 4.80-5.10, culmen .50, tarsus 1.45-1.48, 

 middle toe .90. Female: Wing 7.00-7.50, tail 5.00-5.15, 

 culmen .50, tarsus 1.35-1.40, middle toe .88-.90. Hah. 

 Cuba and Haiti ; accidental or casual in southern Florida. 

 361. F. sparverioides Vig. Cuban Sparrow Hawk. 



Genus POLYBORUS Yieillgt. (Page 224, pi. LXVII., fig. 2.) 



Species. 



Common Characters. — Tail dull white, or pale isabella-color, narrowly barred 

 with graj^ish or dusky, and crossed at end by a broad band of dark brown or black- 

 ish. Adult : Whole top of head, together with greater portion of body and wings, 

 blackish, or dark brown ; cheeks, neck, chest, and tail-coverts dull white or pale 

 isabella-color; nape, back, and breast (sometimes wing-coverts and belly also) 

 barred with whitish (or pale isabella-color) and dusky. Young: Plumage striped 

 with dull brownish and dull whitish or dull buffy, the pileum plain dull brownish; 

 tail as in adult. 



a\ Eump and upper tail-coverts, in adult, white (with or without bars) ; tail 



white, the narrow bars grayish, the terminal dark band 2.00, or more, 



wide. 



bK Scapulars, breast, belly, and middle wing-coverts barred with blackish and 



whitish in adult, striped in young; tail-coverts barred ; wing 16.00-17.70, 



1 Falco dominicensis Gmel., S. N. i. 178S, 285, 



