618 
INDEX 
Oriolidae, 542 f. ; habits, 543 
Oriolus ardens, 542; O. cruentus, 542; O. 
galbula, 542, 542; O. hosii, 542; O. 
kundoo, 542; O. steerii, 542; O. trailli, 
542; O. viridis, 542, 543 
Ornithion imberbe, 474, 476 
Ortalis, 195, 197 ; O. canicollis, 197; O. 
ruficauda, 197 ; O. vetula, 195, 197 
Orthnocnemus, fossil, 251 
Ortholophus, 390, 393 
Orthonyx, 503, 504 
Orthotomus, 514, 518 
Ortygornis, 226 
Ortyx, 202-204; O. virginianus, 231, 232 f. 
Ortyxelus, 293 ; O. meiffreni, 187, 295 
Oscines, 466, 467, 494 ; families of, 495 f.; 
structure, 496; voice-muscles, 13, 491 n. 
Osculatia purpurea, 336; O. sapphirina, 
336 
Osmotreron, 348; O. aromatica, 349; O. 
olax, 349; O. pompadora, 349; O. 
vernans, 348 f. 
Osprey, 137, 149, 180 f. ; habits, 181 
Ossifraga, 60, 61; fossil, 69; O. gigantea, 
65 
Osteornis, fossil, 496 
Ostinops, 580 
Ostrich, 26, 27 f:, -28; breast-bone, 7 ; 
claws of toes, 10 ; farming, 30 ; feathers, 
30 
Otididae, 243, 260 f. ; habits, 262 f. 
Otidiphaps, 325, 328 ; O. cervicalis, 335 ; 
O. insularis, 335 ; O. nobilis, 335 
Otis, 260, 262 ; fossil, 263 ; O. tarda, 261, 
261; O. tetrax, 260-262 
Otocompsa, 504, 505 
Otocorys, 496-498 ; O. 
O. peregrina, 496 
Otogyps, 143; O. auricularis, 144; O. 
calvus, 144 
Otophanes, 416 
Ourissia, 426 
Ousel, Ring-, 510 ; Water-, 519 
Oustalet-—see Milne-Edwards 
Oven-bird, 485 ; nest, 485 
Oviedo, on a Humming-bird, 426 
Owen, on Archaeopteryx, 23; on Dinor- 
nithidae, 41 ; on Dodo, 330 
Owl, 175, 179, 180, 397 f.; clavicles do 
not always unite, 8, 398; habits, 400 f.; 
toes, 10; American Screech-, 413; 
Barn-, 403; Brown, 405; Burrowing, 
400, 409 f., 410; KHagle-, 402, 
413 f.; Grass-, 404; Hairy, 408 ; 
Hawk-, 401, 408, 411; Lapp-, 405; 
Laughing, 408; Little, 403, 410 f.; 
Long-eared, 402, 406; Marsh-, 406 f. ; 
Mottled, 401, 413; of Pallas Athene, 
411; Pigmy-, 407; Saw-whet, 405 ; 
Seops, 403, 412 f.; Sereech-, 398-403, 
404 ; Short-eared, 400, 402, 403, 406; 
Snowy, 399-408, 412; Tawny, 398 n., 
alpestris, 496 f. ; 
405; Tengmalm’s, 405; White, 403; 
Wood-, 401, 402, 405, 406; Wood- 
cock-, 407 
Oxbird, 279 
Ox-pecker, 561 
Oxylabes, 503 
Oxynotus, 526 
Oxypelia, 326 ; O. cyanopis, 340 
Oxypogon guerini, 436 Ff. 
Oxyrhamphidae, 469, 477 
Oxyrhamphus, 477 
Oxyurus, 484 
Oyster-catcher, 276, 302; bill, 11 
Paauw, 263 n. 
Pachycephala, 531, 534; P. simplex, 533 
Pachycephalinae, 531 f. 
Pachyornis, 42; P. elephantopus, 42 
Pachyrhamphus, 480, 482, 483 
Paeoptera, 532 
Pagodroma nivea, 67 
Pagophila, 301; P. eburnea, 306 
Palaearctic region, 15 f. 
Palaeeudyptes antarcticus, fossil, 59 
Palaegithalus, fossil, 496 
Palaelodidae, 70, 105, 108 
Palaelodus, 70, 108 
Palaeocercus cuvieri, fossil, 181 
Palaeociconia, fossil, 99 
Palaeocorax, fossil, 496 
Palaeocycnus, fossil, 136 
Palaeogaea, 15 
Palaeogrus, fossil, 256 
Palaeohierax gervaist, fossil, 181 
Palaeolimnas, fossil, 251 
Palaeopelargus, fossil, 99 
Palaeoperdix, fossil, 240 
Palaeornis, 362-365, 368; P. eupatria, 
368; P. exsul, 366; P. torquata, 368 
Palaeortyx, fossil, 240 
Palaeospheniscus bergii, fossil, 59; P. 
menzbiert, fossil, 59; P. patagonicus. 
fossil, 59 
Palaeospiza, fossil, 496 
Palaeotetriz, fossil, 241 
Palaeotringa, fossil, 300 
Palamedea, 109 ; P. cornuta, 110 
Palamedeae, 108 f. 
Palamedeidae, 108 f. ; habits, 109 f. ; rib, 
6; young, 109 
Palatine, 11 
Palmeria, 562, 564; P. dolii, 563 
Pamprodactylous, 10 
Pandion, 146; habits, 181; P. caroli- 
nensis, 181; P. haliaétus, 180 f.; P. 
leucocephalus, 181; P. solitarius, 165 
Pandionidae, 137, 180 f. ; young, 180 
Panoplites, 437 f. 
Panterpe insignis, 435 
Panuridae, 541 f. 
Panurus biarmicus, 541 f., 541 
Panychlora, 433 
