10 
SYSTEMATIC INDEX. 
Page 
13. Falco vespertinus. Orange -legged Falcon, , . . 51 
11. Falco JEsalon. Merlin Falcon, 52 
15. Falco Tinnunculus. Kestrel Falcon, .... 52 
Genus X. Accipiter. Hawk, 53 
16. Accipiter Palumbarius. Goshawk, . . . . 51 
17. Accipiter Nisus. Sparrow-Hawk, . . . . 55 
Genus XI. Circus. Harrier, 55 
18. Circus cyaneus. Ring-tailed Harrier, . . . 56 
19. Circus cineraceus. Montagu’s Harrier, ... 57 
20. Circus seruginosus. Marsh Harrier, . . . . 57 
FAMILY III. STRIGINtE. STRIGINE BIRDS, OR ' 
OWLS, 58 
Genus XII. Syrnia. Day-Owl, 59 
21. Syrnia funerea. Hawk Day- Owl, . . . . 60 
22. Syrnia Nyctea. Snowy Day- Owl, . . . . 61 
23. Syrnia psilodactyla. Bare-toed Day-Owl, . . . 61 
Genus XIII. Scops. Owlet, 61 
21. Scops Aldrovandi. Aldrovandine Owlet, . . . 62 
Genus XIV. Bubo. Eagle-Owl, 62 
25. Bubo maximus. Great Eagle-Owl, . . . . 63 
Genus XV. XJlula. Hooting-Owl, ..... 63 
26. Ulula Aluco. Tawny Hooting-Owl, .... 61 
27. Ulula Tengmalmi. Tengmalm’s Hooting-Owl, . . 65 
Genus XVI. Asio. Tufted Owl, ..... 65 
28. Asio Otus. Mottled Tufted Owl, .... 66 
29. Asio Brachyotus. Streaked Tufted Owl, ... 67 
Genus XVII. Strix. Screech-Owl, 67 
30. Strix flammea. European Screech-Owl, ... 68 
ORDER II. VOLITATRICES. GLIDERS, 69 
FAMILY IV. CYPSELIN^. CYPSELINE BIRDS, 
OR SWIFTS, 71 
Genus XVIII. Cypselus. Swift, 72 
31. Cypselus Melba. White-bellied Swift, . . . 72 
32. Cypselus murarius. Black Swift, . . . . 73 
FAMILY V. HIRUNDIN^. HIRUNDINE BIRDS, 
OR SWALLOWS, 73 
Genus XIX. Hirundo. Swallow, 71 
33. Hirundo rustica. Red-fronted or Chimney Swallow, . 75 
31. Hirundo urbica. White-rumped or Window Swallow, 75 
35. Hirundo riparia. Bank Swallow, . . . . 76 
FAMILY VI. CAPRIMULGIN^. CAPRIMULGINE 
BIRDS, OR GOATSUCKERS, 76 
