416 



P.VLCONID^. 



and shaded with fulvous brown on their hinder margin ; cheek-stripe 

 ashy brown, long and narrow ; throat white, with a few narrow 

 streaks of brown ; rest of under surface of body ashy brown, every- 

 where mottled with bufty white, taking the form of rounded or oval 

 indents to the feathers and occupying a great part of the margins of 

 all ; the flank-feathers more decidedly greyish brown, with irregu- 

 larly shaped spots or notches of fulvous ; centre of the body, abdomen, 

 and under tail-coverts white ; the centres of the feathers brown, pro- 

 ducing a longitudinal streak ; under wing-coverts ashy brown, mottled 

 with white like the breast. 

 Hah. Greenland. 



a. 5 ad. sk. 



b. 5 ad. sk. 



c. c? juv. St. 



d. 5 ad. sk. 



e. cj juv. sk. 



/. Juv. sk. 

 (/. (S ad. st. 



Greenland. 



Fiskenaesset, Green- 

 land, Feb. 10, 1873. 



Fiskenaesset, Green- 

 land, Feb. 10, 1873. 



Greenland. 



Godhavn, N. Green- 

 land, Sept. 26, 1872 

 {Whytnper). 



Greenland. 



Greenland. 



J. Gould, Esq. Type of 



species. 

 R. B. Sharpe, Esq. [P.]. 



R. B. Sharpe, Esq. [P.]. 



J. Gould, Esq. 



Howard Saunders, Esq. [P.]. 



Howard Saunders, Esq. 

 Governor llolboell [C.J. 



4. Hierofalco gyrfalco. 



Falco gyrfalco, Limi. Si/st. Nat. i. p. 130 (17G6) ; ScM.Abhandl. Geb. 



Zool. 4-c. p. 15 (1841); id. Rev. Crit. p. ii (1844) ; Bp. Coiisp. i. 



p. 24 (1850) ; Scld. Vog. Nederl. pis. 4, 5 (1854) ; Strickl. Orn. Syn. 



p. 78 (1855); Blasius, Nachtr. Naum. Viiq. Deutschl. xiii. Taf. .391 



(1860); Schl. Dierk. Nederl. Voq. p. 11,' pi. 1. fig. 3 (1801); id. 



Mus. P.-B. Falc. p. 12 (1862); Blm. Ibis, 1862, p. 65; Neiot. Ooth. 



Wolley. p. 87, pi. C (1864) ; Sundev. Sv. Foql. p. 209, pi. xxvi. fig. 1 



(1869); Grai/, Hand-l. B. i. p. 18 (1869); Goidd, B. Gt. Br. 



pt. xxii. (1872) ; Schl. Revue Accipitr. p. 34 (1873). 

 Gerfaut de Norwege, Bxff. PL Enl. i. pi. 462 (1770). 

 Falco labradora, Audub. B. Am. pi. cxcvi. (1831). 

 Le Tiercelet hagard du Gerfaut, Schl. i$- Verst, Traite Fauc. pi. 7 



(1853). 

 Falco gyrofalco, Thien. Abhild. Vor/ekiern, Taf. li. figs, "a-d (1854). 

 Hierofalco gyrfalco, Bp. Rev. et Mag. de Zool. 1854, p. 536 ; Degl, ^ 



Gerbe, Orn. Eur op. i. p. 76 (1867). 

 Norway Falcon, Salvin Sf Brodr. Falconry, pi. xv. (1855). 

 Falco norvegicus, Tristr. Ibis, 1859, p. 24. 

 Falco gjTfalco norwegicus, Schl. Mus. P.-B. Falcones, p. 12 (1862) ; 



Bree, B. Eur. i. p. 21 (1866). 



Adult male. Above blue-grey, with broad greyish black cross 

 bands, the bars alternating ; lower back, rump, upper tail-coverts, 

 and tail itself (which is minutely freckled) much clearer blue-grey, 

 with narrow cross bars of greyish black, not increasing in width 

 towards the tip of the tail, which is therefore not darker at its 

 extremity than at the base ; lores and forehead whitish ; crown 

 grey, mottled with black ; the sides of the head from behind the eye 



