THE BIRDS OF AUSTRALIA. 
were seen also at the same place in Aug-Oct. 1913, but no nests with eggs 
were obtained.” 
As the range of the species is comparatively restricted subspecific distinction 
might not be expected, but it seems that these small birds do show marked 
differences throughout Australia. As a matter of fact, christophori and typical 
tenebrosa are readily separable with whitloclci as an intermediate, so that three 
subspecies can be admitted : 
Ethelornis tenebrosus tenebrosus (Hall). 
Northern race : type from the Fitzroy River, 
North-west Australia. 
Ethelornis tenebrosus whitloclci Mathews. 
Central race : type from Port Hedland, mid- 
West Australia. 
Ethelornis tenebrosus christophori (Mathews). 
Southern race : type from Carnarvon, South- 
west Australia. 
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