Genus— QUO YORNIS. 
Quoyoknis Mathews, Austral Av. Rec., Vol. I., pt. 5, p. 
Ill, Dec. 24, 1912. Type (by original designation): Muscicapa georgiana 
Quoy & Gaimard. 
Described under Muscicapa by Quoy and Gaimard, the type species was re- 
described as a species of Eopsaltria by Gould. I introduced the above name 
with differential characters, thus : “ Differs from Eopsaltria in its stronger 
bill, legs and feet and its shorter and more rounded wings with the first 
primary proportionately longer, and the fourth, fifth and sixth longest and 
subequal, the second equalling the seventh, but less than eighth.” 
When A. J. Campbell, the most conservative of Australian ornithologists, 
wrote his Nests and Eggs Austr. Birds he placed the species under the genus 
Amaurodryas, writing : “ Gould and other authorities class the White-bellied 
or White-breasted Robin with the Eopsaltrice, but as the nests and eggs, 
especially the latter, are totally dissimilar from those of any of the members 
of that genus, it is, therefore, obvious the White-breasted bird should be 
separated from the true Eopsaltria, and I have ventured to place it in the 
genus Amaurodryas, with the Dusky Robin of Tasmania, to which, oologically 
at all events, it more closely belongs.” 
This is a rather good instance of the difficulty of gauging the relationships 
of these species from a consideration of their structural features alone, as 
further examination suggests that the relationship of the species is certainly 
with Eopsaltria, and that the second species I assigned to the genus in my 
“ List,” viz., leucura Gould, must be transferred to another genus. I might 
note that a subspecies of the latter was referred to the genus Poecilodryas 
by Hartert. 
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