THE BIRDS OF AUSTRALIA. 
small rietal bristles being noted. The wing formula is very different ; the 
first primary being more than half the length of the second, which is shorter 
than the secondaries ; the third is about equal to the seventh, and the fourth, 
fifth and sixth are subequal and longest. The tail is long and square, the feet 
are long and delicate, the front of the tarsus booted and the claws more curved. 
While thus providing the clue to the relationship of Grallina , the New Guinea 
G. bruijni Salvadori must be considered generically different, and even Hartert 
has used for it the genus name Pomareopsis given by Oustalet in 1880. 
Oustalet described the species as Pomareopsis semiatra and this suggested 
Pomare as its ally, but its nearest relations are the Monarchoid birds. 
The examination of this smaller Grallinoid bird suggested as its allies the 
“ Piezorhynchus ” group of Austral-New Guinea Flycatchers, and there I found 
species very similar in coloration and I cannot see a great deal of structural 
difference. I therefore deduce that the Australian Grallina has evolved by 
isolation in Australia from the ancestors of these, and that due to its peculiar 
specialised habits it has developed long legs, bulkier size and long wings, though 
the bill has only narrowed and not much lengthened. 
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