TABLE OF CONTENTS. XIX 



I' age. 



Genus 15. Tityra Vieillot 86G 



Key to the Species and Subspecies of Tityra >S67 



4G. Tityra semifasciata costaricensis Ridgway 86!) 



■17. Tityra semifasciata personata ( Jardine and Sell)y) 871 



48. Tityra semifasciata griseiceps ( Ridgway ) 87;] 



Genus 16. Querula Vieillot 874 



49. Querula purpurata (Muller) 875 



Genus 17. Cephalopterus Geoffrey St.-Hilaire 877 



Key to the Species of Cephalopterus 878 



50. Cephalopterus glabricoUis Gould 878 



( ienus 18. Procnias Illiger 880 



Key to the Species of Procnias 882 



51. Procnias tricarunculata 888 



Addenda 885 



Index : Hll 



List of figures illustrating generic details xxi 



