BLUE HAWK, OR HEN-HARRIER. 287 
BLUE HAWK, OR HEN-HARRIER. (Lalco cyaneus.) 
PLATE XII. 
Wilson’s American Ornithology, vol. vi. p. 67, pl. 51, fig. 1, for the young (under 
the name of Marsh Hawk, Falco uliginosus).—Falco cyaneus, Linn. Syst. i. p. 
126, sp. 10.—G'mel. Syst.i. p. 276, sp. 10.—Iter Poseg. p. 27, adolescent male, — 
Lath. Ind. Orn. i. p. 39, sp. 94.—Montagu, in Trans. Lin. Soc. ix. p. 182.— 
Meyer, Tasch. Deutschl. Vog. i. p. 145.—Temm. Man. Orn. i. p. 72.—Ranz. 
El. Zool. iii. pl. 7, p. 187, sp. 28.—Brehm, Lehrd. Kur. Vog. i. p. 59.—Selby, 
Ill. Br. Orn. i. p. 26, pl. 10, fig. 1, male ; fig. 2, female.—Savi. Orn. T'osc. 
i. p. 63.—Nob. Cat. and Syn. Birds U.S. sp. 22.—Falco pygargus, Linn. 
Syst. i. p. 126, sp. 11.—Gmel. Syst. 1. p. 277, sp. 11, female and young.— 
Falco Hudsonius, Linn. Syst. i. p. 128, sp. 19.—Gmel. Syst. i. p. 277, sp. 19, 
young, American.—Falco Bohemicus, Gimel, Syst. i. p. 276, sp. 107.—Lath. 
Ind. p. 38, sp. 93, adult male.— Falco albicans, Gimel. Syst. i. p. 276, sp. 102.— 
Lath. Ind. p. 38, sp. 93, adult male.—Falco griseus, Gimel. Syst. i. p. 275, 
sp. 100.—Zath. Ind. p. 37, sp. 86.—Gerard, Tabl, Hlem. p. 37, adolescent 
male.—Falco montanus, var. B, Gmel. Syst. i. p. 278, sp. 106.—Lath. Ind. p. 
48, sp. 116.—Falcocinereus, It. Poseg. p. 27, adolescent male.— Falcoalbicollis, 
Lath. Ind. p. 36, sp. 81, adult South American male.—Falco Buffonii, Gmel. 
Syst. i. p. 277, sp. 103, female and young, American.—Falco uliginosus, 
Gmel. Syst. i. p. 278.—Lath. Ind. p. 40, sp. 95.—Sabine, Zool. App. to 
Frankl. Exp. p. 671, young American.—Falco rubiginosus, J¢. Posey. p. 29.— 
Lath. Ind. p. 27, sp. 56, young.—Falco ranivorus, Daud. Orn. ii. p. 170.— 
Lath. Ind. Suppl. p. 7, young.—Falco europogistus, Daud. Orn. ii. p. 110, 
adolescent male.—Circus europogistus, Vieill. Ois. Am. Sept. 1. p. 36, pl. 8, 
adolescent male.—Circus Hudsonius, Vieill. 1. c. i. p. 36, pl. 9, young.— 
Circus uliginosus, Vieil/. 1. c. i. p. 37, female and young. —Circus variegatus, 
Vieill. U. c. i. p. 87, male changing.—Circus gallinarius, Vieill. Nouv. Dict. 
d@ Hist. Nat. iv. p. 459.—Cireus cyaneus, Jd. xxxi. p. 410.—Circus cyaneus, 
Boie.—Circus ranivorus, Vietll. Nouv. Dict. d’ Hist. Nat. iv. p. 456, young 
African.—Falco strigiceps, Wills. Orn. Suec. i. p. 21.—Falco torquatus, 
Briss. Orn. i. 845, sp. 7; Id. 8vo, p. 100, male andfemale; Brunn.sp. 14.— 
Falco montanus cinereus, Briss. Orn. i. p. 355, sp. 9, var. A; Id. 8vo, p. 
112, adolescent male.—Accipiter freti Hudsonis, Briss. Orn. vi. App. p. 18, 
sp. 47.—Lanarius cinereus, Briss. Orn. i. p. 365, sp. 17 ; Id. 8vo, p. 106.— 
Lanarius albicans, Briss. i. p. 367, sp. 18.—Subbuteo, Gesner, Av. p. 48.— 
Pygargus accipiter, Ray, Syn. p. 17, sp. 5.—Will. Orn. p. 40, pl. 7.—Falco 
plumbeus, cauda tesselata, Klein, Av. p. 52, sp. 22.—Lanarius, Aldr. Orn. 
i. pl. 581, 382, adult male.—Lanarius cinereus, sive Falco cinereo-albus, 
Frisch, pl. 79, 80, adult male.—Falco montanus secundus, Ald7r.— Will. pl. 
9, adult male.—Albanella, Storia degli Uce. i. pl. 35, adult male.—Falco 
pygargo, Id. i. pl. 31, female.—Autre Oiseau St Martin, Belon, Hist. Ois. p. 
104.—L’Oiseau St Martin, Buff. Ois. i. p. 212; Id. Pl. Enl. 459, adult 
male.—Gerardin, Tabl. Elem. Orn. i. p. 43.—La Soubuse, Buff. Otis. i. p. 
215, pl. 9; Id. Pl. Enl. 443, young female ; 480, young male.—Gerardin, 
Tabl. Elem. Orn. i. p. 37, female and young.—Le Grenouillard, Le Vaill. 
Ois. Afrique, i. p. 63, pl. 23, young. —Kore oder Halbweyhe, Lechst. Tasch. 
