MONOGRAPH 
OE THE 
T R O 
G O N I D M, 
T R O 
OR 
G O N S. 
BY 
JOHN GOULD, F.R.S. &c. 
TO BE COMPLETED IN FOUR PARTS. 
PART IV. 
CONTENTS. 
Title. 
Dedication. 
Preface. 
Introduction. 
Synopsis of the Species. 
List of Plates. 
Pharomacrus auriceps (immature male J. 
Trogon tenellus. 
Trogon atricollis. 
-collaris. 
*-variegatus. 
-behni. 
-macrurus. 
--- citreolus. 
-meridionalis. 
Harpactes erythrocephalus. 
LONDON: 
PUBLISHED BY THE AUTHOR, 26, CHARLOTTE STREET, BEDFORD SQUARE. 
[Price Three Guineas .] SEPTEMBER 1st, 1875. 
[Notice is hereby given that the Author of this “Monograph of the Trogonidee ” reserves to himself a 
right of publishing a Translation in France.] 
