BRITISH BIRDS. 
5 
GENUS 9. Circus. Bechstein . 
1. C. Cinerarius. Montagu. 
Syn. Falco Cinerarius, Mont. Busard, Temm. Ash-coloured 
Falcon, Mont. Bewick. B. Cineraceus, Flem, Griff. Cuv. 
Ash-coloured Falcon, Bewick. 
Sp. 2. C. Pygargus. Ray. 
Syn. Falco Cyaneus, Gmel. Linn. Mont. Lath. F. Griseus, F. Mon- 
tanos, F. Pygargus, F. Hudsonii, et F. Buffonii, Gmel. 
Lanarius Cinereus et F. Torquatos, Briss. F. Pygargus, 
Linn. Gmel. Lath. F. Rubiginosus, Lath. La Sombuse, 
Buff. Busard de St. Martin, Temm. L’Oiseau de St. Martin, 
Buff. Hen Harrier, Wils. Penn. Mont. Bewick. Ringtail, 
Lath. Mont. Penn. Wils. Shaw , Bewick. Ringtail Hawk, 
Edivards. 
Sp. 3. C. Rufus. Linnaeus. 
Syn. Circus Rufus, Briss. F. Rufus, Gmel. Lath. C. Palustris, 
Briss. F. iEruginosus, Linn. Lath. Ray , Gmel. Le Busard 
de Marais, Buff. Moor Buzzard, Lath. Mont. Wils. Penn. 
Bewick. 
Division 2. Nocturnae. Cuvier. 
GENUS 1 . Strix. Linnaeus . 
SUB GENUS 1 . Otus. Cuvier. 
Sp. 1. O. Vulgaris. Fleming. 
Syn. Strix Otus, Gmel. Lath. Wils. Ray. Italian-eared Owl, Lath. 
Hibou Moyen Due, Temm. Le Moyen Due on Hibou, Buff. 
Long-horned Owl, Lath. Wils. Penn. Mont. Bewick. 
