XX TABLE OF CONTENTS. 



Genus 4. Trogon — Continued. Page. 



9. Trogon melanocephalus luelanocephalus Gould 756 



10. Trogon melanocephalus illsetabilis Bangs 759 



11 . Trogon citreolus Gould 759 



Genus 5. Trogonurus Bonaparte 761 



Key to the Species and Subspecies of Trogonurus 762 



12. Trogonurus mexicanus (Swainson) 765 



13. Trogonurus ambiguus ambiguus (Gould) 768 



14. Trogonurus ambiguus goldmani (Nelson) 772 



15. Trogonurus elegans (Gould) 773 



16. Trogonurus puella (Gould) 775 



17. Trogonurus aurantiiventris aurantiiventris (Gould) 778 



18. Trogonurus aurantiiventris underwoodi (Bangs) 780 



19. Trogon curucui tenellus (Cabanis) 781 



Genus 6. Chrysotrogon Ridgway 784 



Key to the Species and Subspecies of Chrysotrogon 785 



20. Chrysotrogon caligatus (Gould) 786 



Genus 7. Temnotrogon Bonaparte 790 



21. Temnotrogon roseigaster (Vieillot) 791 



Genus 8. Priotelus Gray 793 



Key to the Subspecies of Priotelus temnurus 793 



22. Priotelus temnurus temnurus (Temminck) 794 



23. Priotelus temnurus vescus Bangs and Zappey 795 



