90 SYSTEMATIC REVISION OF THE AUSTRALIAN THORNBILLS 
Specimens Examined. — Twenty-one from the following localities : Victoria : 
Mario, near Port Albert, Fernshaw, Phillip Island, Somerville, Kilsyth, 
Bayswater, vicinity of Melbourne, Port Fairy. South Australia : Salt Creek, 
Coorong, twenty miles west of Port Victor. 
Measurements. — ' Twenty-one adult specimens of both sexes: wing, 48-53 
C 5 1 ) ; tail, 40-46 (44 5) ; exposed culmen, 8-9 (8.7); tarsus, 18-20 (18 8). 
Subspecific Characters. — Near to typical pusilla but darker, more brownish 
above and on flanks; light subterminal band of forehead feathers more 
distinct. Dorsal surface brownish olive ; flanks buffy brown. 
South Australian specimens from near Port Victor are 
typical macularia. The single example from the Coorong, 
however, exhibits distinct evidence of intergradation with 
albiventris which ranges almost to the coast in that part of 
South Australia only. 
Acanthiza pusilla diemenensis Gould. 
Acanthiza diemenensis Gould, Synop. Birds of Aust., 1838, pi. 59; 
Tasmania. 
Range. — Tasmania. 
Specimens Examined. — Seven from the following localities : Hobart, Sand- 
ford, Bagdad, Launceston. 
Measurements. — Seven adult specimens of both sexes: wing, 51-56 (54T) ; 
tail, 39-48 (42 5); exposed culmen, 9-10 (9 2); tarsus, 18-19 5 (18 4). 
Subspecific Characters. — Closely resembling the typical form in colouration, 
but tinged greyish olive above, and tips of inner web of most tail feathers 
narrowly margined white. The bill and wing averages slightly longer than 
A. p. pusilla. 
Size has been stressed as the chief characteristic of diemen- 
ensis , and while it averages slightly more in length of bill and 
wing than A. p. pusilla , it is similar to some races in all 
measurements. The greyish olive colour of the back, and the 
narrow white margin at tip of inner web of some tail feathers 
appear more definite characters. 
Acanthiza pusilla archibaldi Mathews. 
Acanthiza magnirostris A. J. Campbell, Emu, ii, 1903, p. 202; King 
Island. (Not Acanthiza magnirostris Gould, Synop. Birds of Aust., 
1838, pi. 60.) 
Acanthiza archibaldi Mathews, Nov. Zool., xvii, 1910, p. 501 ; new name 
for Acanthiza magnirostris A. J. Campbell. 
Range. — King Island, Bass Strait. 
Specimens Examined. — Three, including type of magnirostris A. J. Camp- 
bell. 
