TABLE OP CONTENTS. VTTT 



Key to the Species and Subspecies of Momotus — Continued. Pago. 



4. Momotus lessonii goldmani Nelson 460 



5. Momotus subrufescens conexus (Thayer and Bangs) 461 



6. Momotus subrufescens reconditus (Nelson) 463 



7. Momotus mexicanus mexicanus Swainson 463 



8. Momotus mexicanus saturatus Nelson 465 



9. Momotus castaneiceps Gould 466 



Genus 2. Urospatha Salvadori 467 



Key to the Subspecies of Urospatha martii 468 



10. Urospatha martii semirufa (Sclater) •. 468 



Genus 3. Electron Gistel 470 



Key to the Species and Subspecies of Electron 471 



11. Electron platyrhynchus minor (Hartert) 472 



12. Electron platyrhynchus suboles Nelson 474 



13. Electron carinatus carinatus (Dubus) 474 



14. Electron carinatus viridis (Ridgway) 476 



Genus 4. Eumomota Sclater 476 



Key to the Subspecies of Eumomota superciliosa 477 



15. Eumomota superciliosa (Sandbach) 478 



16. Eumomota superciliosa bipartita Ridgway 480 



17. Eumomota superciliosa australis (Bangs) 481 



Genus 5. Aspatha Sharpe 482 



18. Aspatha gularis (Lafresnaye) 483 



Genus 6. Hylomanes Lichtenstein 484 



Key to the Subspecies of Hylomanes momotula 485 



19. Hylomanes momotula momotula Lichtenstein 485 



20. Hylomanes momotula obscurus Nelson 487 



Suborder NycTiccRACiiE. Nocturnal Coracle 487 



Key to the Superfamilies of Nycticoracise 488 



Superfamily Caprdjulgi. The Goatsuckers 489 



Key to the Families of Caprimulgi 490 



Family Caprimulgid^. The Goatsuckers 490 



Key to the Genera of Caprimulgidse 491 



Genus 1. Siphonorhis Sclater 495 



1. Siphonorhis americana (Linnaeus) 495 



Genus 2. Stenopsis Cassin 497 



Key to the Subspecies of Stenopsis cayennensis 498 



2. Stenopsis cayennensis insularis Richmond 499 



3 . Stenopsis cayennensis albicauda (Lawrence) 502 



Genus 3. Antrostomus Bonaparte 503 



Key to the Species and Subspecies of Antrostomus 504 



4. Antrostomus carolinensis (Gmelin) 506 



5. Antrostomus rufus rufus (Boddaert) 510 



6. Antrostomus rufus otiosus Bangs 513 



7. Antrostomus cubanensis Lawrence 513 



8. Antrostomus vociferus vociferus (Wilson) 515 



9. Antrostomus vociferus macromystax (Wagler) 520 



10. Antrostomus (vociferus?) chiapensis Nelson 522 



11. Antrostomus oaxacse Nelson 523 



12. Antrostomus salvini (Hartert) 525 



13. Antrostomus nelsoni Ridgway 527 



14. Antrostomus badius Bangs and Peck 529 



15. Antrostomus ridgwayi Nelson 531 



16. Antrostomus goldmani Nelson 532 



17. Antrostomus sattiratus Salvin 534 



