GEOGRAPHICAL RELATIONS OF BIRDS. 247 
Trumpeter, as well as certain other, not less noteworthy, 
forms, are absent from it. 
In the Amazonian subregion these are found, and it has alto- 
gether twenty-seven peculiar genera. It is remarkable for 
possessing a peculiar Goose (Chenalopex) not found anywhere 
else in America, but plentiful in the Ethiopian region. 
The Peruvian subregion is the only one w hich. possesses the 
Oil-bird (Steatornis car ripensis), which is found in Trinidad and 
considered to form a family by itself. This subregion has no 
less than seventy-two peculiar genera, and is especially rich in 
Tanagers and different kinds of Humming-birds, some of which 
are so local that a species or two seems almost exclusively 
confined to the slopes of one mountain. 
The Central-American subregion is, as we already intimated, 
a mixed region, having many intruders from the North. Out of 
ninety-three genera found within it, but in no other Neotropical 
subregion, just more than half are also Nearctic. 
The Antillean subregion contains about one hundred and 
forty genera, of which thirty are peculiar to it, but no less than 
six are peculiar to Cuba and seven to Jamaica. The family of 
Todies is entirely confined to this subregion; and of its forty 
other families it shares two with other Neotropical subregions 
and eight with both the Neotropical and Nearctic regions, while 
the Frigate-birds and Trogons, though found in the Old World 
also, are not present in the Nearctic region. 
THe AUSTRALIAN REGION is that w hich possesses the most ex- 
ceptional avifauna of all, both with respect to groups here found 
and found nowhere else, and with respect to widely diffused 
groups which are here either remarkable by their absence or by 
having their head-quarters within it. 
Thus the whole family of Birds of Paradise, and that of the 
Bower-birds (Piilonorhynchide), the Lyre-birds (Menwra), the 
Broad-billed, the Brush-tongued, and the Grass Parrakeets, the 
bulk of the Cockatoos, the Emeus, the Cassowaries, the Apteryx, 
and the Kagu *, are absolutely peculiar to this region, while the 
Honey-suckers + and the Mound-makers ¢ are Oat sO. 
The Thick-headed Shrikes (Pachycephaline), the Caterpillar- 
* See ante, p. 48. 
+t See ante, p. 9. One species has crossed the Straits between Ball and 
Lombock, and so just entered the Indian region. 
{ They appear in the Philippine Islands and North-western Borneo, as 
well as in the Nicobar Islands. 
