THE BIRDS OF AUSTRALIA. 
Dacelo leachii macarthuri subsp. nov. 
Macarthur River, Northern Territory. 
These birds are paler on the back than the typical cervintty and also paler 
below, but differ from typical leoAihii in the pale fulvescent under-surface 
and smaller s'ze. Type from Borroloola, Macarthur River, Northern Territory, 
a male collector on the 20th May, 1913. 
Dacelo leachii cervina Gould. 
Port Essington, Northern Territory. 
These are buff below, but rarely as deeply coloured as the type specimen, 
but still a well-marked subspecies. 
Dacelo leachii nana Mathews. 
Melville Island, Northern Territory. 
This is a very well-marked insular form, its small size and deeply coloured 
under-surface, notably crossbarred, being peculiar. 
Dacelo leachii occidentalis Gould. 
North-west Australia. 
This subspecies can easily be recognised when series are examined, being 
almost as dark as the preceding below but paler above. 
Dacelo leachii mungi Mathews. 
Interior North-west Australia. 
No further specimens are to hand, but the variation recognised suggests the 
retention of this subspecies. 
Dacelo leachii clifloni Mathews. 
Mid-west Australia. 
This subspecies seems valid, as the head and back are paler, while the 
under-surface is darker and almost uniform, very little barring being present. 
This species has representatives in New Guinea as follows : — 
Dacelo leachii intermedins Salvador!. 
South-east New Guinea. 
This form is very dark above, while pale, almost wliite, below ; the bill is 
longer and the head darker. 
Dacelo leachii superfiuus subsp. nov. 
South-west New Guinea. 
The specimens in the British Museum from the Mimika River, south-west 
New Guinea, are stiff darker and deeper in coloration, with longer biffs and 
I 
darker heads, but the under-surface stiff pale. The head in the female is 
not as boldly striped as in the male. Type in the British Museum. 
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