From the length of its wings and the general contour of its body, we may feel assured that, like the _P. melanura_, its power of flight is very great, and that it is doubtless enabled to pass from one part of the continent to another whenever nature prompts it to make the passage. The female, although equally graceful in form as her mate, is nevertheless much inferior to him in the colouring of her plumage; the green of the wings and body being less brilliant, and the rich colouring of the crown and cheeks being entirely wanting; a similar kind of plumage also characterizes the male during the first year. The male has the forehead, cheeks and throat rich gamboge-yellow; immediately beneath the yellow of the throat a crescent of scarlet; back of the head, all the upper and under surface grass-green; primaries, secondaries, spurious wing and tail dark blue tinged with green; thighs in some scarlet, in others grass-green; irides orange-yellow; bill rich red; feet brown. The female has the face dull greenish blue; chest dull rose-colour; thighs scarlet; the remainder of the body grass-green; primaries bluish green; central tail-feathers uniform green, the remainder bluish green, with the inner webs for their entire length fine rosy red; irides brown; bill pale reddish orange; feet dark brown. The Plate represents the two sexes of the natural size. [Illustration: POLYTELIS MELANURA. _J. Gould and H.C. Richter del et lith._ _Hullmandel & Walton Imp._ ] POLYTELIS MELANURA. Black-tailed Parrakeet. _Palæornis melanura_, Vig. in Lear’s Ill. Psitt., pl. 28, male. —— _anthopeplus_, Vig. in Ib., pl. 29, female. _Polytelis melanura_, Gould in Syn. Birds of Australia, Part IV. _Woȕk-un-ga_, Aborigines of the mountain districts of Western Australia. _Jul-̏u-up_, Aborigines of King George’s Sound. _Mountain Parrot_, Colonists of Western Australia.