CLASSIFICATION OF BIRDS. 277 



Sub-Family 2. — The Goose Vultures (Gyps), ii., 73; the Tawny Goose Vulture (G. fulvus), ii., 74 ; the 



Sparrow-hawk Goose Vulture (G. Riippellii), ii., 74. 

 „ „ 3. — The Crested Vultures (Vultur), ii., 75 ; the Cowled or Brown Vulture (V. cinereus), ii., 75 ; 



the Crested Vulture (Vultur or Lophogyps occipitalis), ii., 76. 

 „ „ 4.— The Eared Vultures (Otogyps), ii., 76 ; the Eared Vulture (O. auricularis), ii , 77. 



FAMILY X. — The Raven Vultures (Cathartve), ii., 77. 



Sub-Family I. — The Scavenger Raven Vultures (Percnopterus), ii., 78 ; the Egyptian Raven Vulture 

 (P. stercorarius), ii., 78. 

 „ „ 2. — The Collared Vultures (Neophron), ii., 79 ; the Monk Vulture (N. pileatus), ii., 79. 



„ „ 3. — The True Raven Vultures (Cathartes), ii., 82 ; the Urubu (C. aura), ii., 82. 



„ „ 4. — The Crow Vultures (Coragyps), ii., 82 ; the Gallinazo (C. atratus), ii., 82. . 



FAMILY XL— The Day Owls (Surnle), ii., 85. 



Sub-Family I. — The Falcon Owls (Surnia), ii., 85 ; the Sparrow-hawk Owl (S. Ulula), ii., 85. 

 „ „ 2. — The Hare Owls (Nyctea), ii., 86 ; the Snow Owl (N. nivea), ii., 86. 



„ „ 3. — The Stone Owls (Athene), ii., 87 ; the Stone Owl (Athene noctua), ii., 87. 



„ „ 4. — The Burrowing Owls (Pholeoptynx), ii., 89 ; the Brazilian or Rabbit Owl (P. cunicularia), 



ii., 90 ; the Prairie Owl (P. hypogasa), ii., 90. 

 „ „ 5. — The Sparrow Owls (Microptynx), ii., 91 ; the European Sparrow Owl (M. passerina), ii., 91. 



FAMILY XIL— The Eared Owls (Bubones), ii., 91. 



Sub-Family 1. — The Uhus (Bubo), ii., 91 ; the Uhu (B. maximus), ii., 93. 

 „ „ 2. — The Water Owls (Ketupa), ii., 95 ; the Brown Fish Owl (K. Ceylonensis), ii., 95. 



„ „ 3. — The Eared Owls (Otus), ii., 97 ; the Woodland Owl (O. sylvestris), ii., 97 ; the Marsh Owl 



(O. brachyotus), ii., 98. 

 „ „ 4. — The Dwarf Eared Owls (Ephialtes), ii., 98 ; the Dwarf Eared Owl (E. Scops, or E. Carnio- 



lica), ii., 98. 



FAMILY XIII. — The Nocturnal Owls (Striges), ii., 99. 



Sub-Family 1. — The Tree Owls (Syrnium), ii., 99 ; the Tree Owl (S. aluco), ii., 99. 

 „ „ 2. — The Night Owls (Nyctale), ii., 100 ; the Hairy-footed Night Owl (N. dasypus), ii., 100. 



„ „ 3. — The Veiled Owls (Strix), ii., 102 ; Kirchhoff's Owl (S. Kirchhoffii), ii., 102 ; the Barn Owl 



(S. flammea), ii., 102. 



SUB-ORDER V. 

 THE GAPERS (HIANTES). 



FAMILY /.—The Swallows (Hirundines), ii., 104. 



Sub-Family I.— The True Swallows (Cecropis), ii., 105 ; The Chimney Swallow (C rustica), ii.. 106 ; the 

 Senegal Swallow (C. Senegalensis), ii., 109 ; the Thread-tailed Swallow (C. filifera\ 

 ii., no. 

 „ 2.— The Martins (Chelidon), ii., no; the House Martin (C. urbica), ii., no ; the Ariel (C.Ariel), 

 ii., 113. 



