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Show 1877.] MR. D. G. ELLIOT ON THE IBIDINSE. 491 believe, judging from the examples I have seen, that the Siamese birds, when alive, have very little white on the neck, the indication mentioned above being possibly caused by the rose-colour having entirely faded out. There was, unfortunately, no description of the colours of the naked skin sent with the specimens. The neck and upper part of the body is rufousbrown, glossed with greenish bronze. Upper tail-coverts dark blue with green reflections on the edges of the webs. Scapulars like the back, some of the feathers having the webs disunited and open. Primaries and wings very deep rich Prussian blue, the lesser coverts white. Tail Prussian blue, with a green gloss on the edge of the feathers. Underparts rufous-brown, glossed with green. Under tail-coverts green, with a blue tinge. Bill, according to Hume, "very dark plumbeous, blue at base, shading to a dull ochraceous clay colour towards the tips." In the specimens before me it is apparently dark green, lightest at the tip. Legs and feet coral red. H u m e gives the irides as " bright orange." Total length 33 inches; wing 16^, tail 8, bill along culmen 6|, tarsus 3 inches. Another specimen, also brought by M . Harmond from Camboja, measures as follows:-total length 37 inches; wing 16|, tail 9, bill along culmen 7§, tarsus 3| inches. It appears to be a larger and stouter species than the I. papillosus. The sexes unfortunately are not indicated in any of the specimens. There are such trenchant differences exhibited bj this species from all others of this group of birds, especially in the shape of its skull, which resembles somewhat of that its gigantic relative the Thaumatibis gigantea, that it would seem to be entitled to a separate generic rank, and I therefore propose to call it GRAPTOCEPHALUS, with the following characters :- Head and neck bare, covered by a variously coloured skin. Skull square-shaped on top ; occipital region high and wide, sloping to the forehead, which is prominent and descends rapidly to the maxilla. Secondaries are equal in length to the primaries, and both reach nearly to the tips of the rectrices. Second and third primaries equal and longest. Tarsus half an inch longer than the middle toe ; outer toe slightly longer than inner. Tarsi covered with small hexagonal scales. Under tail-coverts extending over two thirds the length of the tail. I could not remove the skull, and therefore am only able to describe the form as it appears in the skin. 6. CARPHIBIS SPINICOLLIS. Ibis spinicollis, Jameson, Edinb. New Phil. Journ. No. 37, p. 213 ; Jard. & Selb. 111. Orn. vol. iv.pl. 17 ; Schleg. Mus. Pays-B. (1863) livr. 4, p. 12. Ibis lamellicollis, La Fres. Mag. Zool. (1836) p. 1, pl. 57. Geronticus spinicollis, Gray, Gen. Birds (1847) vol. iii. p. 567, sp. 3 ; Gould, B. Austr. vol. vi. pl. 45 ; Gray's Hand-1. B. (18/1) pt. iii. p. 39. Carphibis .spinicollis, Reich. Nov. Syn. Av. (1851) pl. 82. |