Ill 



Faleo diihiii.-i Gm. S. N. i, 1788, 281.— Lath. Iiul. Orn. 1790, 43; Geu. Hist, i, 1821, 279.— 



Daud. Tr. 1800, ii, 122. 

 Accijnief siriatvs VmiiA.. O. A. S. 1807, i)l. 14.— Strickl. Orn. Syn. i, 1855, 109. 

 Falco vieilhtinus SiiAW, Geu. Zool. vii, 1809, 204. 



Falco vvlox WiLS. Am. Orn. v, 1812, IK), pi. xlv, fig. 1.— Bonap. Isis, 1832, 1137 ; Ann. 

 N.Y. Lye. ii, 1833,29. 

 Jccipiter vefox ViG. Zniil. Boeclieys Voy. i, 1824, 338. 

 Asliir velox James, (ed. Wils.) Am. Orn. i, 1831, G8. 

 Falco pennsylvaincus Wilson, Am. Orn. vi, 1812, 1, pi. 46, fig. 1. 



Accipite.r pennsylvanlcus Stephens, ZoiJl. xiii, ii, 1815, 32. — VtGORS, Zool. .Jonrn. i, 

 1824, 338.— SWAINSON, Fauna Bor.-Am. ii, 1831, 8, 44.— Jardine (ed. Wilson), 

 Am. Orn. i, 1831, 70, 

 Jstur pemisiilvanicus Lesson, Man. i, 1829, 92.— Jameson (ed. Wilson), Am. Orn. 



1,1831,70. 

 Xisus pevnsi/lranicus Cuvier, Eeg. An. i, 1829, 334.— Less. Tr. Orn. 1531, 59. 

 Sjyarvius striatus Vieillot, Nouv. Diet, x, 1817, 338. 



Nisus striaius Cuvier, Rog. An. i, 1829. 334. 

 Accipiter ardesiacens Vieil. Enc. M6tb. iii, 1823, 1274. 

 Nisns malfini Lesson, Tr. Orn. 1831, 58. 

 Accipiter fringilloides Jardine (ed. Wilson), Am. Orn. ii, 1832, 215. (Not of D'Orb. 



1839, ex Vigors, 1828.) 

 ^. Nisus pacificus Lesson, Man. 1847, 177. 



Hob. — Entire continent of isTortb America, south to Panama ; Baha- 

 mas, but not in Cuba (where replaced by N. fringilloides) or other 

 West India Islands. 



Wing, 6.35-8.80; tail, 5.50-8.20; culmen, 0.35-O.GO; tarsus, 1.85-2.30; 

 middle toe, 1.10-1.55. Fourth and fifth quills longest, third nearly 

 equal to sixth, outer five with inner webs emarginated. Tail even or 

 slightly emarginated. 



Adult male : — Above plumbeous, becoming gradually darker on the 

 pileura, the feathers with blackish shaft-streaks. Tail rather lighter, 

 usually browner, (sometimes with a narrow white terminal margin), 

 crossed with four dusky bauds. Occipital feathers pure white beneath 

 the surface, and scapulars with large concealed roundish spots of 

 the same. Lower parts mixed white and rufous, in transverse spots or 

 bars, the rufous bars usually connected along the middle of the feather, 

 the shaft being conspicuously darker. Throat and cheeks streaked but 

 not barred. Orissum and anal region immaculate pure white. Tibise 

 usually with the rufous i)rodominating, rarely uniform rufous. Wing, 

 6.70-7.10; tail,5.S0-G.10; culmeu/).3S-b.42; tarsus, 1.90-2.05; midJletoe, 

 1.10-1.25. 



Adult female: — Similar to the male, but less bluish above, and the 

 white of the lower parts less pure. Wing, 7.80-8.80; tail, 6.60-8.20; 

 culmen, 0.48-0.00 ; tarsus, 2.00-2.25 ; middle toe, 1.30-1.55.* 



Yourui male: — i^bove dark sepia, the feathers bordered terminally 

 with rusty, the feathers of the nape widely edged with the same, or 

 with fulvous-whitish ; feathers of the pileum similarly but more narrowly 

 edged with the same. Tail brownisli-gray, crossed by four to five well- 

 defined, continuous, narrow bands of blackish. Scapulars and upper tail- 

 coverts with concealed large spots of white, and occipital region white 

 beneath the surface. Beueath, white, with or without an ochraceous 

 tinge, the anal region and crissum immaculate, the throat streaked 

 with dusky; the breast, abdomen, sides, and fianks with broad stripes 

 of dilute sepia, with darker shaft-streaks, these stripes sometimes dilat- 

 ing on the sides into chain-like series of spots ; tibiai with ellii>tical 

 or tear-shaped stripes, or variously-shaped spots, of dilute sepia, on a 



* Terminal two-thirds of V>ill deep blnck ; basal portion pale blue ; interior of mouth 

 bright cobalt-bine, more purplish far back ; cere, rictus, eyelids, and naked " eyebrow" 

 oil-green; iris deep orange-red ; tarsi and toes browish lemon-vellow ; claws jet-black 

 (No>J56, Mus. R. R.). 



