DESCRIPTION OF A NEW SPECIES OF ACANTHIZA 
- (A. tenuirostris). 
By A. Zıerz, F.LS., vens — M Director of the 
S.A. Mu 
[Read November 6, 1900.] 
This new species is nearest allied to Acanthiza reguloides. 
Its more diminutive size, its feeble bill, the different ghade of 
rump feathers, and the absence of the bright rufous 
colouring of the basal third of the tail feathers, Pange. 
it fro canthiza reguloides, which, according to Gould, 
a >” common species about Adelaide. 
wo specimens have been collected by R. M. Hawker, Esq., 
at pont. Creek, in eges. 1895. 
propose for this new species the name Acanthiza tenui- 
rostris (the aft: billed Tit 
With the general characters of A. (Geobasileus) reguloides. 
Upper surface of a more greyish tinge instead of olive brown. 
The feathers on the forehead are much darker and broadly 
margined with white. Upper tail coverts of a yellowish 
white tinge; in A. reguloides they are ochreous. Under sur- 
face whitish and slightly tinged with yellow. Throat and 
chest still paler, each feather with a very slight broken 
margin of brown. ase of tail only with a faint, just per- 
ceptible, rufous tinge. The external margin of the centre 
tail feathers, and the tips of all greyish. Upper tail coverts 
whitish, slightly shaded with fawn 
or comparison ive the measurements of A. reguloides 
from the hills east of Adelaide, together with those of the 
new bird. 
A, tenuirostris. A, reguloides. 
Total length ne 3°5 in ches ie 4 inches 
Length of wing ... . 19 T Bi 
Length of culmen... Aes au uuo 
Height of bill — ... | m" "23:4 
