It flies slowly and heavily, and while on the wing utters a very harsh and grating cry, resembling the native name. The stomach is membranous and capacious, and the food of those examined contained seeds of the _Eucalypti_, _Banksiæ_, &c. The sexes, which differ considerably in colour, may be thus described:— The male has the entire plumage glossy greenish black; lateral tail-feathers, except the external web of the outer one, crossed by a broad band of fine scarlet; irides dark blackish brown; bill bluish lead-colour, becoming much paler on the under side of the lower mandible; feet brownish black, with a leaden tinge. The female has the upper surface similar to, but not so rich as, that of the male, and has an irregularly shaped spot of yellowish white near the tip of each of the feathers of the head, crest, cheeks and wing-coverts; the under surface brownish black, crossed by numerous narrow irregular bars of dull sulphur-yellow; the under tail-coverts crossed by several irregular bars of mingled yellow and dull scarlet; the lateral tail-feathers dull scarlet, fading into yellow on the base of the inner webs, and crossed by numerous irregular bars of black, which are narrow at the base of the feathers and gradually increase in breadth towards the tip. The Plate represents the two sexes about two-thirds of the natural size. [Illustration: CALYPTORHYNCHUS LEACHII. _J. Gould and H.C. Richter del et lith._ _Hullmandel & Walton Imp._ ] CALYPTORHYNCHUS LEACHII. Leach’s Cockatoo. _Psittacus Banksii_, Lath. Ind. Orn., vol. i. p. 107. variety β. _Banksian Cockatoo_, Lath. Gen. Syn. Supp., vol. ii. p. 91 A.—White’s Journ., pl. in p. 139.—Phil. Bot. Bay, pl. in p. 267.—Lath. Gen. Hist., vol. ii. p. 200 A. _Psittacus Cookii_, Temm. in Linn. Trans., vol. xiii. p. 111. ———— _Solandri_, Temm. in Linn. Trans., vol. xiii. p. 113. _Solander’s Cockatoo_, Lath. Gen. Hist., vol. ii. p. 201. _Cook’s Cockatoo_, Lath. Gen. Hist., vol. ii. p. 201. _Psittacus Leachii_, Kuhl, Consp. Psitt, in Nov. Acta, vol. x. p. 91. pl. 3. ———— _Temminckii_, Kuhl, Consp. Psitt, in Nov. Acta, vol. x. p. 89. _Calyptorhynchus Cookii_, Vig. and Horsf. in Linn. Trans., vol. xv. p. 272. ———— _Solandri_, Vig. and Horsf. in Linn. Trans., vol. xv. p. 274. ———— _Leachii_, Wagl. Mon. Psitt, in Abhand., vol. i. p. 683. ———— _Temminckii_, Wagl. Mon. Psitt, in Abhand., vol. i. p. 684. ———— _stellatus_, Selb. in Nat. Lib. Orn., vol. vi. Parrots, p. 134. pl. 15. _Carat_, Aborigines of New South Wales.