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Show 1877.] MR. D. G. ELLIOT ON THE IBIDIN.E. 503 llbis cayanensis, Schleg. Mus. Pays-Bas, liv. iv. p. 8. 1 Geronticus cayanensis, Gray, Gen. Birds (1847) vol. iii. p. 567; id. Hand-1. B. (1871) pt. iii. p. 40. Hab. From Panama, through Northern South America to Brazil. Top and sides of head and throat blackish brown, with a purple tinge ; narrow line on forehead and lores bare, skin black; back and sides of neck dark metallic green ; back and wings dark bronzy green, with red reflections in certain lights ; tail dark green, with blue reflections; primaries deep blue: entire underparts dark bronze-green ; .bill dark green for two thirds its length from base, pale green for the remainder ; legs and feet lead-colour. Total length 22-1 inches ; wing 13, tail 7\, bill 5|, tarsus 2|. 18. MOLYBDOPHANES CEERULESCENS. Curucdu aplomado, Azara Apunt. Hist. Nat. Parag. y Rio Plata (1802-5) iii. p. 195, no. 363. Ibis ceerulescens, Vieill. Nouv. Diet. Hist. Nat. (1817) vol. xvi. p. 18 ; id. Ency. Meth. (1323) torn. iii. p. 1147 ; Schleg. Mus. P.-Bas (1863) livr. 4, p. 9 ; Sclat. & Salv. Proc. Zool. Soc. (1869) p. 635. Ibis plumbea, Temm. Pl. Col. 235; Wagl. Syst. Av. (1827) sp. 14; Less. Trait. Orn. (1831) p. 567- Harpiprion plumbeus, Wagl. Isis (1832) p. 1232. Geronticus ceerulescens, Gray, Gen. Birds (1847) vol. iii. p. 567. sp. 9 ; id. Hand-1. B. (1871) pt. iii. p. 40. Molybdophanes ceerulescens, Reich. Nov. Syn. Av. pl. 291. figs. 2383-84 (1851) ; Bon. Consp. Gen. Av. (1857) vol. ii. p. 154. Harpiprion ceerulescens, Sclat. & Salv. Nomencl. Av. Neotr. (1873) p. 127. Hab. Brazil, Conchitas ; Argentine Republic (Hudson). This species, the Curucdu aplomado of Azara, was described by Vieillot (I.e.), and afterwards figured by Temminck under a different name in his ' Planches Coloriees.' It is the type of Reichenbach's genus Molybdophanes, and is restricted apparently to Brazil, south of the Amazons, and to the Argentine Republic, where, however, it is not uncommon. A white bar commences above and behind the eye and covers the forehead. A white line at the base of the mandible. Top of head and lengthened nuchal crest dark brown, with a slight greenish tinge. Throat and neck covered with long narrow feathers, light brown, in certain lights having a pinkish tinge. Upper parts pale bronzy green. Wings like the back; in some lights the feathers have a silvery gloss. Primaries deep blue, greenish towards the edges of the outer webs. Tail dark green. Entire underparts brownish grey, with light pink reflections in certain lights. Bill and bare space in front of the eye black. Legs and feet yellow in the skin. Total length 33 inches; wings 15|, tail 7\, bill along culmen 6|, tarsus 3\. 19. FALCINELLUS IGNEUS. Tantalus falcinellus, Linn. Syst. Nat. (1766) p. 241. sp. 2 |