LIST OF ILLUSTRATIONS 



Frontispiece — Viridian Dacnis, Mielero Esmeraldino, 

 Dacnis viguieri. 



Figure 



1. Mangrove Swallow, Golondrina Manglera, Tachycineta albilinea 9 



2. White-thighed Swallow, Golondrina Muslos Blancos, Ncochelidon 



tibialis minima 30 



3. Portion of outer primary feather of the Rough-winged Swallow, 



Golondrina Ala de Sierra, Stelgidopteryx ruficollis, showing 

 hooklike leading barbs 37 



4. Black-chested Jay, Chocho, Cyanocorax affinis zeledoni 46 



5. Silvery-throated Jay, Urraca Garganta de Plata, Cyanolyca ar- 



gentigula argentigida . 49 



6. American Dipper, Mirlo Acuatico Americano, Cinclus mexicanus 



ardesiacus 53 



7. Black-capped Donacobius, Paralauta de Agua, Donacobius atri- 



capillus brachypterus 58 



8. White-headed Wren, Cucarachero Cabeciblanco, Campylorhy fi- 



chus albobrunneus 61 



9. Band-backed Wren, Cucarachero Listado, Campylorhynchus 



zonatus costaricensis 65 



10. Bay Wren, Cucarachero Cabecinegro, Thryothorus nigricapillus 85 



11. White-breasted Wood-wren, Cucarachero Pechiblanco, Heni- 



corhina leucosticta 110 



12. Slaty-backed Nightingale-thrush, Zorzal Pizarreno, Catharus 



fuscater 154 



13. Black-faced Solitaire, Solitario Carinegro, Myadestes melanops 168 



14. Long-tailed Silky-flycatcher, Capulinero Colilargo, Ptilogonys 



caudatus, male 173 



15. Tropical Gnatcatcher, Cazajejen Tropical, Polioptila plumbea, 



male (below), female (above) 179 



16. Yellowish Pipit, Bisbita Amarillenta, Anthus lutescens parvus. 191 



17. Cedar Waxwing, Chinito Cedroso, Bombycilla cedrorum 195 



18. Rufous-browed Peppershrike, Pajaro Perico, Cyclarhis gu- 



janensis 199 



19. Green Shrike-Vireo, Follajero Verde, Smaragdolanius pulchellus. 205 



20. Yellow-winged Vireo, Vireo Aliamarillo, Vireo carmioli 212 



21. Scrub Greenlet, Verdecillo Rastrojero, Hylophilus flavipes 238 



22. Black-and-white Warbler, Reinita Trepedora, Mniotilta varia, 



male 247 



v 



