118 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
Acanthiza chrysorrhoa multi Mathews. 
Acanthiza chrysorrhoa multi Mathews, Nov. Zool., xviii, 1912, p. 351 ; 
Wilson’s Inlet, Western Australia. 
Range . — Form north of Perth, south-east to the southern coast and east 
towards the South Australian border. 
Specimens Examined. — Twenty-nine from the following localities: Perth 
Herdsman’s Lake, Gracefield, Mandurah, Harvey River, Beverley, Dumbley- 
ing, Broome Hill, Wonerup, Cape Naturaliste, Ellensbrook, Lake Muir, 
Wilson’s Inlet, Albany, Bannister, Stirling Ranges, Lake Dundas, Zanthus. 
Measurements. — Twenty-nine adult specimens of both sexes: wing, 54-62 
(59); tail, 37-43 (41 3) ; exposed oilmen, 9 5-11 (10); tarsus, 17-18 5 
(17 5). 
Subspecific Characters . — Most closely resembling addenda but under sur- 
face white prominently tinged pinkish buff rather than deep olive-buff, and 
under tail-coverts white; upper parts more brownish, light brownish olive, 
with mouse grey nape. 
This race is sharply distinct in colouration from A. c. ferdi- 
nandi. Most available specimens are from localities in, or 
bordering on, the area of good rainfall (30-40 inches) in south- 
west Australia. It is surprising, therefore, to find multi 
represented by two examples from Lake Dundas and Zanthus, 
both of which localities are in generally arid country similar 
to that inhabited by ferdinandi. Possibly the presence of these 
birds in that class of country resulted from a movement 
induced by temporary suitable conditions, but more material 
from a wide area is essential for a proper understanding of 
the distribution of these two forms in Western Australia. 
