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Show 1877.] MR. D. G. ELLIOT ON THE IBIDIN.E. 507 with green reflexions at their tips. Tail bright metallic grass-with rich purple reflexions. Thighs reddish. Bill apparently dark red. Feet and legs black. Total length without bill 17 inches; wing 11, tail 5, bill along culmen 3|, tarsus 2|. 22. FALCINELLUS THALASSINUS. Ibis thalassina, Ridgway, Am. Nat. (1874) p. 110 ; Allen, Bull. Mus. Comp. Zool. Camb. (1876) p. 356. Ibis guarauna, Baird, B. N. Amer. Atl. pl. 87. Hab. Pacific coast of America from California to Chili (Ridgway) ; Straits of Magellan (King). This seems to be among the very smallest members of this group of birds ; it certainly is of the genus to which it belongs. It is readily recognized by the vivid green of the upper parts, and the brown head and neck, these last parts giving the bird the appearance of not being adult. A specimen in Messrs. Salvin and Godman's collection was brought from the Straits of Magellan by Capt. King, thus extending the range beyond that given by Mr. Ridgway, viz. quite to the end of the South-American continent. Head and neck and underparts dark rufous brown, with some slight greenish reflections upon the flanks. Wings and upper parts and tail brilliant grass-green. Throat and cheeks light-brown, streaked with five white marks. Bare skin between the eye and bill, partly surrounding the former, apparently red. Bill reddish orange. Legs and feet dark red. Total length without bill 13^ inches ; wing 9, tail 4\, bill along culmen 3\, tarsus 3. 23. LAMPRIBIS OLIVACEA. (Plate LI.) Ibis olivacea, Du Bus, Bullet. Acad. Brux. (1837) p. 105 ; id. Es-quiss. Ornith. pl. 3 ; Reichenb. J. f. O. (1874) p. 378. Hagedashia olivacea, Bon. Consp. Gen. Av. (1857) vol. ii. p. 153. sp. 2. Comatibis olivaceus, Hartl. Syst. Orn. West-Afr. (1857) p. 231. sp. 657. Geronticus olivaceus, Dohrn, Proc. Zool. Soc. (1866) p. 330. sp. 27. Native name "Puwahor Aprawariu." Hab. Guinea (Hartl.); Prince's Island (Dohrn); Denkera (Ussher). This species is extremely rare ; and I know of only three or four specimens, the majority of the museums in Europe not having it represented in their collections. It is very distinct from all other known species, and, like many of its relatives, belongs apparently to a genus different from any yet instituted, and is placed best between the Falcinellus and Eudocimus. I propose for it the term Lampribis, with the following characters :- Space around and behind the eye, extending backwards to a point, and entire base of mandibles bare of feathers; the feathers of the throat reaching between the crura of mandible. Culmen on its basal |