Index. 



953 



obsoletus, Planesticus, 322, 741 



Salpinctes, 755 



Turdus, 741 

 occidentalis, Ereunetes, 421 



Myrmeciza, 325, 597, 598, 616 

 ochraceiceps, Pachysylvia, 778 



pallidipectus, Pachysylvia, 778 

 ochraceus, Contopus, 703 



Myiochanes, 703 



Troglodytes, 765 



Vireo, 780 

 ocellata dentiens, Micrathyria, 230, 236, 



237 



Micrathyria, 229, 230 



quicha, Micrathyria, 237 

 ocellatus, Pcecilobrycon, 45 

 ochracea, Erythrodiplax, 248 

 ochraceus, Troglodytes, 321, 330 

 oculata, Argia, 119, 121, 133, 134 

 Ocyalus wager i, 835 

 Ocyurus chrysurus, 298 

 Odonata, Contributions to a Knowledge 

 of. By Philip P. Calvert, 73- 

 280 



Neotropical Region, List and De- 

 scription of Species, 80-263 



Synopsis of Venational Characters 

 of Some South South American 

 Species, 229 

 Odontophoridae, 385 

 Odontophorus, Key to the Costa Rican 

 Species of, 386 



castigatus, 325, 386, 387 



guttatus, 324, 386, 389 



leucolaemus, 323, 386, 388 



marmoratus, 387 



melanoleucus, 453 



melanotis, 323, 358, 386, 387 



veraguensis, 324, 386, 389 

 (Edicnemidae, 424 

 CEdicnemus bistriatus, 424 

 cenea, Argia, 143 

 (Enops aura, 443 

 Oiseau-Mouche a long Bee, 544 

 oleagineus, Chloronerpes, 589 



Mionectes, 712 

 oleaginus, Mionectes, 713 

 oligolepis, Mcenkhausia, 14 

 olivacea, Dendrocincla, 651 



olivacea, Dendrocincla, 651 



humilis, Euphonia, 871 



Muscicapa, 783 



pusilla, Euetheia, 892 



pusilla, Tiaris, 891 



Vireosylva, 783 

 olivaceiceps, Chlorospingus, 323, 838 

 olivascens, Gymnopithys, 614 

 olivaceus, Mionectes, 360, 711 



olivaceus olivaceus, Mionectes, 711 

 Phyllomanes, 783 

 flavotinctus, Picumnus, 325, 582, 



594 



Picumnus, 594 



Sittasomus, 651 



vSittosomus, 652 



Vireo, 783 

 Oncostoma cinereigularc, 733 

 onusta, Tramea, 260 

 Onychorhynchus mexicanus, 734 



mexicanus fraterculus, 734 

 ophthalmicus, Pogonotriccus, 672 

 Oporornis formosa, 808 



formosus, 808 



Philadelphia, 808 



tolmiei, 807 

 oralai, Argia, 123, 153, 154 

 Orchard Oriole, 827 

 Orchilus atricapillus, 729 



ecaudatus, 729 

 Oreopyra calolaema, 358, 541, 542 



calolaema pectoralis, 541 



castaneiventris, 542 



castaneiventris calolaema, 323, 513, 

 514, 541, 542 



cinereicauda, 324, 329, 513, 514, 

 540, 542 



hemileuca, 358, 540 



leucaspis cinereicauda, 540 



pectoralis, 541, 542 



venusta, 541 

 Oreothlypis gutturalis, 321, 815 

 orichalcea, Argia, 120, 123, 143, 144 

 Oriolus spurius, 829 

 ornata, Cyanocitta, 772 

 ornatus, Falco, 465 



Mecistogaster, 106 



Pachyramphus, 666, 667 



Spizaetus, 446, 465 

 Ornismya columbica, 533 



constantii, 545 



delattrii, 552 



delphinae, 537 



helenae, 552 



longirostris, 520 

 Ornithion imberbe, 721 



pusillum, 721 



pusillum subflavum, 721 

 orpheus, Microcerculus, 753 

 Orthemis sequilibris, 245 



ambinigra, 246 



ambirufa, 246 



cultrifonnis, 246 



ferruginea, 244, 245 



sulphurata, 245 



levis, 246 

 Ortalida cinereiceps, 383 



