324 



THE DISTRIBUTION OP AUSTRALIAN LAND-BIRDS. 



Area 6. 



Area 



x-Vrea 9. 



Area 2. 



Bathilcla Struthidea Entomyza Pteropodocys. . 



Emblema Amytornis iMeliphaga Acanthochaera. 



Aidemosyne. .. Drymaedus Philemon Amytornis 



Myiagra iCalamanthns. . .'Staganopleura. Calamanthus. . . 



Gerygone ^Entomophila. . .| Aidemosyne. . . Staganopleura. 



A 



rea 4. 



Chlamydodera. 

 Aphelocephala. 



Oreoica 



Entomophila. . . 

 Emblema 



Area i 



Corcorax . ., 

 Cinclosoma 

 Acanthiza. . 

 Falcun cuius 

 Strepera. . . 



Area 8. 



Sericornis. . . . 



Hylacola 



Megalurus. . . 

 Pteropodocys 

 Strepera 



The genera above as absent from area 6 have a 

 northern and eastern distribution ; those absent from area 

 3 have a dry coimtry distribution (excepting certain of the 

 Calamanthi); those absent from area 9 have an eastern 

 distribution; those absent from area 2 have a southern 

 and western distribution ; those absent from area 4 have a 

 distribution in districts of small rainfall ; those absent from 

 area i are genera with a southern distribution; while 

 wanting in area 8 are Strepera and Megalurus, which are 

 distributed all over the continent excepting the north- 

 west; Hylacola and Pterypodocys not represented in 

 Northern Australia; Sericornis and the other large and 

 closely allied Acanthiza being scarcely, if at all, repre- 

 sented in North-west Australia. 



Area 9 appears to have for its birds two places of 

 origin — areas 7 and 6. The western plateau of Central 

 Australia is continuous with that of the eastern portion 

 of Western Australia. There is in fact no barrier across 

 the whole of Southern Australia for those genera that can 

 live in arid country. 



In the south-west of area 9 there is a small area of 

 country in which one may naturally be interested. It is 

 isolated and separated from its like by about half of the 

 continent. Its like is the south-east comer of Australia 

 (area 4). Yet it has genera (i) that are found in area 4 

 and not in the intervening country. 



(i) Psophodes, Atrichornis. and Sphenura. 



