THE BIRDS OF AUSTRALIA. 
was not published until 1857. Consequently the first introduction into scientific 
literature of the generic names Pterodro7Ym and JEstrelata is that in the Co 7 nptes 
HeTidus Sci.f Paris, Vol. XLII., p. 768, 1856, and in that place the genus 
Pterodro7na appears first, being genus No. 4, while ^strelata, is genus No. 11. 
Consequently the genus-name to be used is Pterodro 7 n(x. To those who would 
demur to this change, I would point out that the acceptance of ^strelata was 
made by Coues upon the very same principle as I now follow, and therefore 
no argument is possible. 
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