INDEX. XXXIX 
SECOND CLASS.—BIRDS. 
OVIPAROUS VERTEBRATA IN GENERAL, 197 
BIRDS, 202 
—~+— 
ORDERS OF THE CLASS OF BIRDS. 
I. AcciPitREs, 207 IV. GaLLinacex, 207 
II. Passerin#&, 207 V. GRALLATORIA, 207 
III. Scansoria#, 207 VI. PatmirepeEs, 207 
GENERA, SUBGENERA, AND OTHER DIVISIONS. 
I. ACCIPITRES: 
Gen. 1.—Vultur, 208 
Subgen.—Vultur, 209 
Cathartes, or Gallinazas, or Catharistes, 210 
Percnopterus, Gypaetos, or Neophron, 210 
Gypaetos or Phene, 211 
Gen. II.—Falco, 212 
Sect. 1.—WNoble Birds of Prey. 
Falco, 212 
Hierofalco, 214 
Sect. 2.—Of the Gen. Falco.— Aquila, 215 
Ignoble Birds of Prey. 
Subgen.—Aquila, 215 
Halietus, 216 
Pandion, 217 
Circaetus, 217 
Harpyia, 218 
Morphnus, 219 
Gen.—Astur, 220 
Subgen.—Astur, 220 
Nisus, 221 
Gen.—Milvus, 221 
Subgen.—Milvus, 222° 
Pernis, 222 
Gen.—Buteo, 223 
Circus, 224 
Serpentarius or Gypoeranus, 225 
Nocturnal Birds of Prey. 
Gen.—Strix, 225 
Subgen.—Otus, 226 
Ulula, 226 
Strix, 227 
Syrnium, 227 
Bubo, 227 
Noctua, 228 
Scops, 229 
