98 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
ACANTHIZA REG ULO IDES Vigors and Horsfield. 
Three forms, long considered worthy of recognition, appear 
admissible. 
An unusual feature of the distribution both of this species 
and of A. chrysorrhoa is that only typical examples have been 
obtained at Cobbora, which lies west of the eastern coastal 
range. The Hunter River valley forms a break in the moun- 
tainous country in that area, but the vicinity of Scone, on the 
Hunter River, is the normal western limit of the range of 
coastal forms. 
Acanthiza reguloides reguloides Vigors and Horsfield. 
Acanthiza reguloides Vig. and Horsf., Trans. Linn. Soc., xv, 1827, 
p. 226; Parramatta, New South Wales. 
Geobasileus reguloides tarana Mathews, Emu, xiv, 1914, p. 60; Tarana, 
New South Wales. 
Geobasileus reguloides cobbora Mathews, Aust. Av. Rec., ii, 1915, 
p. 130; Cobbora, New South Wales. 
Geobasileus reguloides nesa Mathews, Bull. Brit. Ornith. Club, xl, 1920, 
p. 106; Bunya Mountains, Queensland. 
Range. — South-eastern Queensland to south of Sydney, New South Wales. 
Specimens Examined. — Twenty-six from the following localities : Queens- 
land: Burnett River, Brisbane. New South Wales: Cobbora, Scone, Hawks- 
bury River, Turramurra, vicinity of Sydney, Tarana (type of tarana). 
Measurements. — Twenty-five adult specimens of both sexes: wing, 49-55 
(52 7); tail, 36-43 (39- 1); exposed culmen, 8 5-9 (8 8); tarsus, 16-17 
(16 5). 
Male. — General colour of upper parts deep greyish olive to greyish olive 
on rump; forehead anteriorly pinkish buff, followed by feathers similar in 
colour to upper surface, each with a curved subterminal baud of light buff ; 
lores, feathers surrounding eyes and ear-coverts white, tinged buff, and 
margined greyish olive; wings fuscous, quills with pale outer margins, and 
lesser upper wing-coverts deep greyish olive like back ; upper tail-coverts 
chamois; basal half of tail light pinkish cinnamon with white shafts and 
margined chamois; tail distally blackish brown, broadly tipped avellaneous, 
indistinct on central feathers, increasing outwards, and continuing down 
the outer web of outermost feathers; chin, throat, and breast white, tinged 
straw yellow and most of the feathers narrowly tipped brownish, merging 
into straw yellow of remainder of under surface and under tail-coverts ; 
axillaries white, tinged straw yellow; under wing-coverts and inner margin 
of wing-quills pale pinkish buff. “Eyes pale yellow; bill and feet dark 
brown.” 
Female. — Similar to male. 
The type of tarana and specimens from Cobbora do not 
differ from typical reguloides , and this appears to be admitted 
by Mathews, who has consigned both tarana and cobbora to 
synonymy (Syst. Av. Aust,., p. 609). 
