GEOGEAPHIOAl EELATIONS OJ BIEBS. 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 (Ohenahpea;) not found anywhere 

 else in America, but plentiful in the Ethiopian region. 



The Peruvian subregion is the only one which possesses the 

 Oil-bird {Steatomis earipensis), 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 GentraUAmerican subregion is, as we already intimated, 

 a mixed region, having many intruders from the North. Out of 

 nin«ty-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 Prigate-birds and Trogons, though found in the Old World 

 also, are not present in the Nearctic region. 

 , The Austealian Eegion is that which possesses the most ex- 

 ceptional avifauna of all, both wdth 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 (PtilonorhyncMdce), the Lyre-birds (Menwa), 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 t and the Mound-makers J are almost so. 



The Thick-headed Shrikes {Pachycephalince), the Caterpillar- 



* See ante, p. 48. 



t See ante, p. 9. One Bpeoies has crossed the Straits between BaE and 

 Lomboek, and so just entered the Indian region. 



X They appear in the Philippine Islands and Iforth-western Borneo, as 

 well aa in the If icobar Islands. 



