116 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
Subspecific Characters.— Differs markedly from A. c. chrysorrhoa in its 
darker colouration, particularly the under surface, which is buff as distinct 
from yellow in the typical race. General colour above deep olive; chin and 
throat white, in some warm buff like remainder of median portion of under 
surface, merging into dark olive-buff on flanks and sides of breast ; under 
tail-coverts white, tinged yellow; axillaries and under wing-coverts white 
tinged warm buff. 
Easily distinguished by the deep buff colour of the under 
surface from all races of chrysorrhoa except multi , from 
which it differs in its more intense colouration and particu- 
larly in having the under tail-coverts washed with yellow, not 
pure white. Specimens from south-eastern South Australia 
are similar to typical sandlandi. 
Acanthiza chrysorrhoa leachi Mathews. 
Acanthiza chrysorrhoa leachi Mathews, Nov. Zook, xviii, 1912, p. 351 ; 
Tasmania. 
Range. — Tasmania. 
Specimens Examined. — Five from Launceston, Swansea and Hobart. 
Measurements. — Five adults of both sexes: wing, 58-61 (59 6); tail, 
38-44 ( 40 ' 2 ) ; exposed culmen, 9-11 (10); tarsus, 16-17 (16 6). 
Subspecific Characters. — Similar to sandlandi, differing only in the lighter 
colour of upper parts in which it equals typical chrysorrhoa. 
The lighter colour of the upper surface is constant in the 
few r specimens available, but this race is not markedly 
different from sandlandi. It appears worthy of recognition, 
however, in view of its insular habitat, and the fact that the 
species has not been collected in any of the Bass Strait islands. 
Acanthiza chrysorrhoa addenda Mathews. 
Acanthiza chrysorrhoa addenda Mathews, Aust. Av. Rec., i, 1912, p. 44; 
Port Augusta, South Australia. 
Geobasileus chrysorrhoa normantoni Mathews, ib., ii, 1913, p. 76; 
Normanton, Queensland. 
Geobasileus chrysorrhoa mallee A. G. Campbell, Emu, xxii, 1922, p. 66; 
Mallee, Victoria. 
Range. — Central Queensland, inland New South Wales, north-western 
Victoria and adjoining country of South Australia west at least to Eyre 
Peninsula. 
Specimens Examined. — Fourteen from the following localities: Queens- 
land: Charleville. Victoria: Kow Plains (type of mallee). South Australia : 
Moolawatana, Mt. Searle, Kallioota, Coffin’s Bay Peninsula. 
Measurements— -Fourteen adult specimens of both sexes: wing, 57-62 
(59 2) ; tail, 38 43 (40-2); exposed culmen, 9-10 (9 8); tarsus, 16-5-17-5 
(16 9). 
