DABBENE: ORNITOLOGÍA ARGENTINA 



483 



nigriceps ( Planesticus), 361. 

 nigricollis (Anthracothorax), 267. 

 nigricollis (Busarellus), 177, 245. 

 nigricollis (Euphonia), 373. 

 nigricollis (Lampornis), 178, 267, 

 nigricrissa (Piaya), 425. 

 nigricrissa (Piaya cayana), 425, 426. 

 nigrifrons (Muscisaxicola), 322. 

 nigrifumosus (Cinclodes), 291. 

 nigriguttata (Nothural, 187. 

 nilotica (Geloehelidon), 21<>, 410. 

 nivea (Pagodroma), 204. 

 nobilis (Gallinago), 221. 

 Nomonyx, 233. 

 Nonnula, 279. 

 notata (Ortygops), 197. 



Nothoprocta, 186. 

 Nothura, 104, 106, 18T. 

 notius (Pachj'rhamphus), 311. 

 notius (Synallaxis Spixi), 294. 

 novegeorgica (Pagodroma nivea), 201. 

 nudicollis (Ampelis), 432. 

 nudicollis (Casmarhynchos), 432. 

 nudicollis (Casmarliynchus) , 432. 

 nudicollis ( G'asmorhynchus) , 432. 

 nudicollis (Prociiias), 132, 439. 

 Numenius, 97, 129, 148, 218. 

 Nyctalops, 251. 

 Nyctibius, 262. 

 Nycticorax, 36, 65, 224, 412. 

 Nyctidromus, 123, 421, 438. 



O. 



obscura (Elaenia), 339. 



obscura (Penelope), 177, 189, 4<>8, 409. 



obscura ( Penelope obscura i, IOS. 



obscura (Spermophila), 179. 



obscura (Sporophila), 383. 



obsoleta (Muscícapa), 337. 



obsoleta (Myiopatis), 337. 



obsoletum (Camjrtostoma), 337. 



obsoletum (Ornithioni, 337. 



obsoletum (Ornithion obsoletum), 337. 



obsoletus (Buteo), 244. 



obsoletus (Crypturusl, 185, 407. 



oceánica (Oceanites), 202. 



Oceanites, 202. 



Oceanitinae, 114, 117. 



ocellatus ( Caprimulgus), 422. 



ocbrocephala i Cyclarhis), 366. 



ocliroleuca (Grallaria), 429, 139. 



ochroptera (Leptoptila), 191. 



Ochthoeca, 175, 31?. 



octasetaceus (Merganser), 234. 



oenanthoides (Ochthoecai, 317. 



oleagineus (Anaíazenops), 302. 



oleagineus (Mionectesi, 332. 



oleagineus (Xenicopsis), 179. 

 oleagineus (Xenicopsis rufosupercilia- 



tusí, 302. 

 olivácea (Muscicapa), 364. 

 olivaceus (Sittasomus), 305. 

 olivascens (Embernagra), 394. 

 olivinus (Dendrobates), 277 '. 

 olivinus (Veniliornis), 178, 27 T. 

 ophthalmicus (Chlorospingus), 379. 

 Opisthocomi, 146. 



Opisthocomidae, 145, 155, 156, 195. 

 Opisthocomiformes, 22, 33, 40, 68, 84, 93, 



99, 105, 117, 122, 131, 139, 147, 195. 

 Opistbocomus, 20, 135, 195. 

 Orbignyanus (Picumnus) 279. 

 Orbignyanus (Thinocorys) 174, 214. 

 Orbignyi (Ai-reinon\ 395. 

 Orbignyi (Bolborhynchus), 174, 182, 259. 

 Orbignyi (Cranioleuca), 297. 

 Orbignyi (Siptornis), 297. 

 Orchilus, 325. 

 oreas (Centrites), 323. 

 oreas (Lessoniai, 323. 

 Oreopbilus, 215. 

 OreotrocJiilus, 268, 420. 

 ornata (Nothoprotat, 174, 187. 

 ornata (Poospiza), 392. 

 ornata (Spermophila), 383. 

 ornatus (Spisaétus), 177, 247. 

 Ornithion, 337. 

 Orospina, 389. 

 Ortalis, 190. 

 Ortygops, 197. 



oryzivorus (Dolichonyx), 179, 402. 

 Oryzoborus, 380, 437. 

 Ossifraya, 37, 138, 171, 2<>5. 

 Ostinops, 401. 

 Otididae, 127. 

 Ofus, 251. 

 Otus, 253, 419. 

 Oustaleti (Cinclodes), 291. 

 oxypterum (Nettium), 231. 

 Ox3 r rhamphidae, 121. 

 Oxyurus, 292. 



