THE BIRDS OE AUSTRALIA. 
For simplicity s sake it is to be hoped that no future sysfcematist will think 
it necessary to rename these suggested genera in the event of his adopting 
and furnishing characteristics of them, though in most cases his right to 
disregard Mr. Gould s names would be unquestionable, according to the general 
recognised principles of zoological nomenclature.” 
Mr. Edwin Ashby states that this species has the habits of a Swallow and 
considers its generic separation, on account of the lack of the forked tail only, 
as artificial. 
Compared with Hirundo I find practically no structural difference in the 
bill, wing, and feet, the tail however being simply emarginate, with feathers 
normal. I have been unable to trace any writer who has given a good 
character for this genus which has been commonly recognised for the last 
fifty years. 
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