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 _Palæorni_ of India. 376. Polytelis Barrabandi Vol. V. Pl. 15. 377. Polytelis melanura Vol. V. Pl. 16. Genus APROSMICTUS, _Gould_. Generic characters. As in _Platycercus_, but the _bill_ more feeble; _cere_ and _nostrils_ covered with 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 Vol. V. Pl. 17. This species appears to be confined to New South Wales. 379. Aprosmictus erythropterus Vol. V. Pl. 18. The red-winged Parrakeets from the north coast are nearly a fourth smaller than those inhabiting the Liverpool 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. Adelaidiæ_, _P. Pennantii_, _P. flaveolus_, _P. flaviventris_, &c. form another; _P. eximius_, _P. splendidus_, _P. icterotis_, &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.