Crown of the head, back of the neck, cheeks and chest emerald-green, which is lightest on the forehead and cheeks; back brownish green; rump scarlet; tip and under surface of the shoulder, spurious wing, and the outer edge of the basal half of the primaries rich ultramarine blue; the blue of the shoulder above passing into sulphur-yellow, and forming a conspicuous spot of the latter colour in the centre of the shoulder; greater and lesser wing-coverts and secondaries bluish green; upper tail-coverts and two centre tail-feathers green, passing into blue towards the tip, which is blackish brown; the remainder of the tail-feathers green at the base, gradually passing into delicate greyish white on the inner webs and the tips; centre of the abdomen yellow; thighs dull bluish green; under tail-coverts greyish white; bill horn-colour; feet brown; irides pale brown. The young male of the year differs from the adult in having those parts delicate greenish grey which in the latter are emerald-green; in being destitute of the red colouring of the rump, and of the yellow on the centre of the abdomen; and in having the bases of the secondaries and some of the primaries white. The Plate represents a male and female of the natural size. [Illustration: EUPHEMA CHRYSOSTOMA: _Wagl:_ _J. & E. Gould del^t._ _C. Hullmandel Imp._ ] EUPHEMA CHRYSOSTOMA, _Wagl._ Blue-Banded Grass-Parrakeet. _Psittacus chrysostomus_, Kuhl, Consp. in Psitt. in Nova Acta, vol. x. p. 58, pl. 1. _Psittacus venustus_, Temm. in Linn. Trans., vol. xiii. p. 121. _Blue-banded Parrakeet_, Lath. Gen. Hist., vol. ii. p. 188. _Nanodes venustus_, Vig. and Horsf. in Linn. Trans., vol. xv. p. 274.—Selby, Nat. Lib. Parrots, p. 172, pl. 27.—Steph. Cont. of Shaw’s Zool., vol. xiv. p. 118, pl. 15.—Swains. Class. of Birds, vol. ii. p. 305.—Gould, Syn. Birds of Australia, Part II. _Euphema chrysostoma_, Wagl. Mon. Psitt. in Abhand., vol. i. pp. 492, 544, and 707.