314 
GEOGRAPHICAL ZOOLOGY. 
[PART IV. 
Family 66. — TROGONLDiE. (7 Genera, 44 Species.) 
General Distribution. 
Neotropical 
SuB-RpIlONS. 
Ne ARCTIC 
Sub-regions. 
P ALS£ ARCTIC 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions, 
- 2 . 3 . 4 - 
= 
I'- 
1 . 2 . 3 — 
1 . 2 . 3 . 4 

The Trogons form a well-marked family of insectivorous 
forest-haunting birds, whose dense yet puffy plumage exhibits 
the most exquisite tints of pink, crimson, orange, brown, or 
metallic green, often relieved by delicate hands of pure white. 
In one Guatemalan species the tail coverts are enormously 
lengthened into waving plumes of rich metallic green, as grace- 
ful and marvellous as those of the Paradise-birds. Trogons are 
tolerably abundant in the Neotropical and Oriental regions, and 
are represented in Africa by a single species of a peculiar 
genus. The genera now generally admitted are the following : — 
Trogon (24 sp.), Paraguay to Mexico, and west of the Andes 
in Ecuador ; Temnotrogon (1 sp.), Hayti ; Prionoteles (1 sp.), 
Cuba (Plate XVII. Vol. II. p. 67) ; Apaloderma (2 sp.), Tropical 
and South Africa; Harpactes (10 sp.), the Oriental region, exclud- 
ing China ; Pharomacrus (5 sp.), Amazonia to Guatemala ; 
EuptUotis (1 sp.), Mexico. 
Remains of Trogon have been found in the Miocene deposits 
of France ; and we are thus able to understand the existing 
distribution of the family. At that exceptionally mild period in 
the northern hemisphere, these birds may have ranged over all 
Europe and North America ; but, as the climate became more 
severe they gradually became restricted to the tropical regions, 
where alone a sufficiency of fruit and insect-food is found all the 
year round. 
