180 
Ophaetus, 40. 
Ophiotheres, 100. 
Opiornis, App. p. 152. 
Opisthocomus, 1412. 
Opistolophus, 1981. 
Opoethus, 1408. 
Oppetiorhy nchus , 
406. 
Orbignesius, App. 
93 Qa. 
Orcheilus, 823. 
Orchesticus, 1226. 
Orchilus, 823. 
Oreas, 949, 1808. 
Oreias, 949, 1808. 
Oreicola, App. 559 a. 
Oreocincla, 704. 
Oreo'ica, 1013. 
Oreopeleia, 1702. 
Oreophasis, 1731. 
Oreophilus, 1842. 
Oreopholus, 1842. 
Oreotetrax, 1799. 
Oreotrochilus, 298. 
Oreskios, App. 20 Qa. 
Origma, 579. 
Orinus, 931. 
Oriolia, 754. 
Oriolus, 749, 951, 
1149. 
Oriotrochilus, 298. 
Orites, 605, 1325. 
Oritiscus, App. 604. 
Oriturus, 1326. 
Ornelias, App. p. 156. 
Ornismya, 348. 
Ornithichnites, App. 
p. 154. 
Ornithion, 832. 
Ornitbomya, 348. 
Ornithomyia, App. 
325, 326. 
Ornithopus, App. p. 
155. 
Orocetes, 712. 
Orocoetes, 712. 
Oropeleia, 1702. 
Orospina, 1349. 
Orosterops, App.626a , 
Orpheus, 715. 
INDEX. 
Orsipus, 784. 
Ortalida, 1729. 
Orthocolaptes, 441. 
Orthocorys, 1412. 
Orthogcnys, 1221. 
Orthonyx, 470. 
Orthorhinus, 746. 
Or thorhy nchus, 318, 
358, 463. 
Orthornis, App. 2975. 
Orthotomus, 500. 
Ortigum, App. p. 156. 
Ortygarchus, 1984. 
Ortygia, 1791. 
Ortygion, 1780. 
Ortygis, 1784, 1785, 
1786. 
Ortygium, 1780. 
Ortygodes, 1784. 
Ortygometra, 1990, 
1994. 
Ortygornis, 1771, 
1775. 
Ortygospiza, 1294. 
Ortyx, 1791. 
Ortyxelos, 1786. 
Orygma, 579. 
Orynx, 1172. 
Oryx, 1172. 
Oryzobosus, 1266. 
Oryzornis, 1289. 
Osmotreron, App. 
16555. 
Ossifraga, 2122. 
Osteornis, App. p. 153. 
Osterophea, 1910. 
Ostinops, 1144. 
Ostralega, 1873. 
Ostralegas, 1875. 
Otagon, 733. 
Othello, 1029. 
Otis, 1824. 
Otocompsa, 772. 
Otocoris, 1369. 
Otocorys, 1369. 
Otodytes, 2085. 
Otogyps, 3. 
Otomela, 1004. 
Otus, 133. 
Otygospiza, 1294. 
Otymnus, App. p. 156. 
Ourax, 1733, 1734. 
Owenia, App. p. 152. 
Oxamphus, App. p. 
155. 
Oxipterus, 977. 
Oxycerca, 1288. 
Oxyechus, 1861. 
Oxyglossus, 616. 
Oxylophus, 1631, 
1632. 
Oxynotus, 976. 
Oxypetes, 1810. 
Oxypiga, 672. 
Oxypogon, 339. 
Oxypyga, 672. 
Oxvrhamphus, 440. 
Oxyrhynchus, 440. 
Oxyruncus, 440. 
Oxystomus, 1139. 
Oxytelos, 1786. 
Oxyura, 2073. 
Oxyurus, 423. 
Pachycephala, 912. 
Pachyglossa, App.29 1 . 
Pachyglossus, 291. 
Pachyptila, 2128. 
Pachyptynx, App. 
1335.* 
Pachyramphus, 831. 
Pachyrhy nchus, 830, 
831. 
Pachysylvia, 620. 
Padda, 1289. 
Paecila, 600. 
Paecilonetta, 2048. 
Psecilopternis, 17. 
Psecilopteryx, 77. 
Psecilornis, 58. 
Pagonetta, 2064. 
Pagophila, 2154. 
Palseornis, 1457. 
Palaestra, 171. 
Palamedea, 1980. 
Palapteryx, App. p. 
152. 
Pallene, 175. 
Pallenis, 170. 
Pallenura, 637, 638. 
