20 
/. occidentalism to be identical, but having had numerous oppor- 
tunities of observing them, I am satisfied that they are distinct ; 
and in confirmation of this opinion I may state that the I. Berigora, 
which is from the eastern coast, is always the largest, has the cere 
blue-grey, and the plumage of the adult light brown, sparingly 
blotched with white on the breast ; while the I. occidentals, from 
the western coast, is a more delicately formed bird, has the cere 
yellow and the breast white, with faint lines of brown down the 
centre of each feather. 
12. Ieracidea occidentalis, Goidd Vol. I. PI. 12. 
Genus Tinnunculus. 
13. Tinnunculus Cenchroi'des Vol. I. PI. J3. 
Cerchneis immaculatus, Brehm, Isis. 
A beautiful representative of the Kestrils of Europe and India, 
where, as well as in Africa and in most parts of America, members 
of this group are to be found. 
The range of the Tinnuncidus Cenchroides extends over the 
whole of the southern parts of Australia, and that it extends far 
towards the northern portion of the country is proved by Mr. Gilbert 
having found it, as well as its nest, during the expedition of Dr. 
Leichardt from Moreton Bay to Port Essington. 
The following is an extract from his Journal : — “ October 2. 
Found, for the first time, the eggs of Tinnunculus Cenchroides , four 
in number, deposited in a hollow spout of a gum-tree overhanging a 
creek ; there was no nest, the eggs being merely deposited on a bed 
of decayed wood.” They are freckled all over with blotches and 
minute dots of rich reddish chestnut on a paler ground, and are one 
inch and five-eighths in length by one inch and a quarter in breadth. 
Genus Astur. 
14. Astur Novse-Hollandiae Vol. I. PL 14. 
15. Astur Novae- Hollandise, albino Vol. I. PL 15. 
Astur Novce-Hollandice , Cuv. Reg. An. 1817, p. 320. 
Sparvius niveus, Vieill. Nouv. Diet. d’Hist. Nat., tom. x. p. 338. 
Dcedalion candidum, Less. Traite d’Orn., p.66. 
Falco leucaetos, Forst. Descr. Anim. and Drawings, No. 35. 
Astur ( Leucospiza ) Novce-Hollandice , Kaup, Class, der Saug. 
und Vog. p. 119. 
I think Professor Kaup is right in proposing a new generic title 
for this species, differing as it does both in structure and habits from 
the true Astur s ; he also, like myself, considers the white birds to be 
merely albino varieties of the other; but my friends, the Rev. T. 
J. Ewing and Ronald C. Gunn, Esq. of Van Diemen’s Land, are 
both most decidedly opposed to this view of the subject, and found 
their dissent upon the circumstance of there being none other than 
white individuals found in Van Diemen’s Land. 
So far as it is at present known, the southern and eastern portions 
