2 
FALCONIDA!. 
CIRCUS GOULDT, Bonaparte. 
( C. assimilis , Gould, non Jardine and Selby.) 
Gould’s Harrier. 
Gould, Handbk. Bds. Aunt., Vol. i., sp. 2G, p. 58. 
This species is found breeding in swampy localities, or in the 
inlets and bays of the coast, constructing a nest of sticks and 
twigs on the top of a low thick bush, or clump of rushes. A set 
of C£t"s, three in number, taken from a nest built in some low 
bushes at Western Port Bay, Victoria, on the 15th November, 
1884, are white with a bluish-green tinge inside. Length (A) 1-98 
x 1'5 inches, (B) 2"03 x 1 S3 inches, (C) 2T xl-5G inches. 
The breeding season of this species extends during September 
and the three following months. 
I fab. Derby, N.W. Australia, Rockingham Bay, Port Denison, 
Wide Bay District, Dawson River, Richmond and Clarence River 
District, New South Wales, Interior, Victoria and South 
Australia, Tasmania. (Ramsay.) 
Genus ASTUR, Lacepede. 
ASTUR CINEREUS, Vieillot. 
Grey-backed or New Holland Goshawk. 
Gould, Handbk. Bds. Aunt., Vol. i., sp. 14, p. 37. 
Some naturalists consider that the Tasmanian bird, which is 
purely white in both sexes, is a distinct species from the 
continental form, in which the male alone is white, the females 
having an ashy-grey back, and in the young stage both sexes 
have ashy-grey bai's on the under surface of the body. As the 
Tasmanian form is purely white it will perhaps be better to 
distinguish these varieties (or species 1) under the names of the 
