XXIV 
INTRODUCTION. 
Genus Astur, Lacep. 
14. Astur NoAffe-HoUandise ............. Vol. I. PI. 14. 
15. Astux- Novse-Hollandise, albino ............ Vol. I. PI 15. 
Astur NovcB-Hollandice, Cuv. R^g. An., 1817, p. 320. 
Sparvius niveus, Vieill. Nouv. Diet. d'FIist. Nat., torn. x. p. 338. 
Dcedalion candidum, Less. Traite d'Orn., p. 66. 
Falco leucaetos, Forst. Deser. Anim. and Drawings, No. 35. 
Ashir (^Leucospiza) Novee-HoHandite, 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 fi'om the true Asttirs ; he also, hke 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 in Van Diemen's' Land. 
So far as it is at present known, the southern and eastern portions of Australia and the island of Van Diemen's 
Land constitute the habitat of the species. 
16. Astur radiatus Vol. I. PI. 16. 
Astur testaceus (^Ernest.^, Kaup, Isis, 1847, p. 367. 
A curious form not quite agreeing with Astur ; it is very rare, and nothing Avhatever is known of its habits. 
17. Astur approximans, Viff. 8f Horsf. . . . . . . . . . . . Vol. I. PI. 17. 
Astur radiatus, Cuv. Reg. An., 1829, p. 332. 
Nisus (^Urospiza') radiatus, Kaup, Mus. Senckenb., 1845, p. 259. 
■ ( — ) approximans, Kaup, Isis, 1847, p. 182. 
Accipiter approximans, List of Birds in Brit. Mus. Coll., Part I. 2nd edit. p. 74. 
The Astur approximans has been with propriety removed to the genus Accipiter by Mr. G. R. Gray, and to this 
genus my A. cruentus is also referable ; for although of a larger size than the other members of that form, their 
structure, except in the shorter middle toe, is very similar. 
18. Astur cruentus, Gould . Vol. I. PI. 18. 
Astur cruentus, Gould in Proc. of Zool. Soc, Part X. p. 113. 
This species and the preceding are representatives of each other in the eastern and western portions of the 
continent. 
I have lately seen specimens from Port Essington. 
Genus Accipiter, Briss. 
19. Accipiter torquatus Vol. I. PI. 19. 
Sparvius cirrhocephalus, Vieill. Nouv. Diet. d'Hist. Nat., tom. x. p. 328. 
tricolor, Vieill. ibid. p. 329. 
Falco melanops. Lath. Ind. Orn. Supp., p. 12.? 
Sparvius melanops, Vieill. Nouv. Diet. d'Hist. Nat., tom. x. p. 239 ? 
Astur (^Micronisus') torquatus, Kaup, Mus. Senckenb. 1845, p. 259. 
Nisus (^Urospiza') torquatus, Kaup, Isis, 1847, p. 181. 
Accipiter cirrhocephalus. List of Birds in Brit. Mus. Coll., Part I. 2nd edit. p. 73. 
Precisely similar in all its actions and in its economy to the Sparrow Hawk, Accipiter nisus of Europe. 
