RESTLESS FLYCATCHER. 
an inaccessible position. None of these nests was less than seventy feet from 
the ground, and all were built on slender branches of the tallest trees.” 
Rogers’s experience was very different, as follows: “Nov. 29, 1908. Found 
both birds at a nest, finished, but deserted on Dec. 10. It was built in a thin 
limb of a large paper-bark tree growing on the bank of a large water-hole, the 
limb hanging over the water, and was seven feet from surface. Dec. 12, 1908. 
Another nest found in a similar position, three feet from surface of water. On 
Dec. 2, 6, 11, 1910, three nests were found, all in paper-bark trees and from 
eight to ten feet from the ground only. 
In a black and white bird variation is mainly seen in size, and in this case 
quite a noticeable degree of difference is observed. Thus fifty years ago Gould 
separated as a distinct species a form from Northern Australia sent by Water- 
house, on account solely of its smaller size. Waterhouse’s birds were principally 
from the Northern Territory, and this should be accepted. 
All small birds from the north and north-west were called S. nana, but 
on criticising the series when preparing my “ Reference List ” I found four 
forms were separable ; thus 
Seisura inquieta inquieta (Latham). 
New South Wales, Victoria, South Australia. 
Seisura inquieta nea Mathews. 
Queensland and Eastern Northern Territory. 
“ Differs from S. i. inquieta in having shorter tail and wings ; wing 99 mm. 
Type from Dawson River, Queensland.” 
Seisura inquieta westralensis Mathews. 
South-west Australia. 
“ Differs from S. i. inquieta in its larger size ; wing 113 ram. Type from 
Broome Hill, South-west Australia.” 
Seisura inquieta nana Gould. 
North-west Australia. 
“ Gould’s measurements : bill f, wing 3|, tail 3, tarsi f inch.” 
I maintained this subdivision in my “ List,” adding the specimens from the 
western Northern Territory to the last named. This is fortunate, as the last- 
named locality must now be regarded as the original locality of Gould’s name. 
Upon reconsideration I find that two series can easily be distinguished which 
might be regarded by some workers even as distinct species : a southern one 
ranging from the Dawson River, Queensland, through New South Wales, 
Victoria, South Australia to South-west Australia, and a northern one from 
Derby, North-west Australia along Northern Australia to Normanton, Queens- 
land. These differ in size so appreciably that there can be no confusion on that 
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