THE BIRDS OE AUSTRALIA. 
this species, I concluded that the above was the same form, but series from 
dormant on, the type locality of Diggles species, allows the admittance of four 
subspecies, as recognised in my “ List.” 
Gerygone olivacea olivacea (Gould). 
Gerygone olivacea queenslandica Mathews. 
Gerygone olivacea flavigasta (Diggles). 
Gerygone olivacea rogersi Mathews. 
These show a gradual diminution in size from New South Wales across 
to Derby, accompanied by paler coloration above and below, the two extremes 
being noticeably different. If Sharpe’s cinerascens be only a subspecies, this 
species should occur at Cape York, but there are no records. 
