INTRODUCTION. 
Ixv 
374. Calyptorhynchus Baudinii, Vig. . . . . . . . . . . . Vol. V. PI. 13. 
Inhabits Western Australia, and is distinguished by its small size and by the Avhite marks on the tail. 
Genus Callocephalon, Less. 
Of this form only a single species is known. 
375. Callocephalon galeatum ........ 
Inhabits the southern coast of Australia and Van Diemen's Land. 
Vol. V. PI. 14. 
Genus Polytelis, Wagl. 
This genus comprises two species, both of which are peculiar to the southern portions of Australia. They 
have many characters common to, and resemble in appearance, the Palceorni of India. 
376. Polytelis Barrabandi 
377. Polytelis melanura . 
Vol. V. PI. 15. 
Vol. V. PI. 16. 
Genus Aprosmictus, Gould. 
Generic characters. 
As in Platycercus, but the hill more feeble ; cere and nostrils covered Avith fine hair-like feathers ; wings longer 
and less concave ; tail more square ; tarsi shorter and toes longer than in that genus. 
Two, if not three species of this form inhabit Australia, and others are found in New Guinea and the 
neighbouring islands. They are distinguished from the Platycerci by the possession of a well-developed os 
furcatorium, a bone which is entirely wanting in the members of that genus; in their habits they are mainly 
arboreal, and in their disposition are morose and sullen. 
378. Aprosmictus scapulatus ...... 
This species appears to be confined to New South Wales. 
Vol. V. PI. 17. 
379. Aprosmictus erythropterus ............ Vol. V. PI. 18. 
The red- winged Parrakeets from the north coast are nearly a fourth smaller than those inhabiting the Liver- 
pool plains and similar districts of the south coast ; are they varieties of each other or distinct species ? 
Genus Platycercus, Vig. 
In my opinion the New Zealand birds that have been placed in this genus are not true Platycerci, all the 
known species of which are confined to Australia ; they comprise fourteen species which appear to be naturally 
divisible into minor groups, to which generic appellations may hereafter be given ; for instance the P. semitorquatus, 
P. Baueri, P. Barnardi, &c. form one; the P. Adelaidice, P. Pennantii, P. Jlaveolus, P. flaviventris, &c. form another; 
P. ewimius, P. splendidus, P. icferotis, &c. form a third ; and P. pileatus a fourth. 
The members of this and the two next genera lay from seven to ten eggs in the holes of trees. 
380. Platycercus semitorquatus 
381. Platycercus Baueri . 
382. Platycercus Barnardii, Vig. 8f Horsf. 
383. Platycercus Adelaidiae, Gould . 
384. Platycercus Pennantii 
385. Platycercus flaviventris 
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PI. 19. 
PI. 20. 
PI. 21. 
PI. 22. 
PI. 23. 
PI. 24. 
