The magnitude of this Papilio renders it an object of peculiar interest; it is one of the most conspicuous insects of its tribe, and in point of elegance cannot assuredly be considered inferior to any of its numerous species. In the plate accompanying this description, the Papilio is represented in its natural size: the whole disk is of a fine yellow colour, with a deep black border: the posterior wings are marked with a series of yellow lunules, and another of brilliant blue spots, composed of little shining dots, of which the brightest are in the centre. Beneath, the breast, abdomen, and wings, are yellow: margin of the anterior pair black with a yellow streak, and a black streak of spots on the lower pair. ------------------------------------------------------------------------ [Illustration: _25_ _London. Published as the Act directs, by E. Donovan & Mess.^{rs} Simpkin & Marshall, Dec.^r 1 1822._ ] ------------------------------------------------------------------------ ORNITHOLOGY. PLATE XXV. TROCHILUS ORNATUS TUFTED-NECK HUMMING BIRD. ORDER PICÆ. GENERIC CHARACTER. Bill subulate or awl-shaped; filiform, tubular at the tip, longer than the head: upper mandible forming a sheath for the lower. Tongue filiform, the two threads coalescing and tubular: feet formed for walking: tail composed of ten feathers in general. ** Bill straight. SPECIFIC CHARACTER AND SYNONYMS. Golden green, beneath glossy brown, crest rufous; and on each side, below the ears, a tuft of elongated rufous feathers with a green spot at the tip of each. TROCHILUS ORNATUS: viridi aureus, subtus-nitente fuscus crista rufo: infra aures utrinque pennis elongatis rufis apice macula viridi. TROCHILUS ORNATUS: viridi-aureus, subtus nitente-fuscus, fascia uropygio alba, crista (in mare) verticis et fasciculo pennarum infra aures utrinque rufo.—_Gmel. Linn. Syst. Nat. T. 1. p. 497. n. 58._ TROCHILUS ORNATUS: viridi-aureus subtus fusco-aureus, crista rufa abdomine infimo vittaque transversa uropygii albis, infra aures utrinque pennis 6 s. 7 elongatis rufis apice macula viridi.—_Lath. Ind. Orn. 318. 58._ Hupecol _Buff. Hist. Nat. des Ois. 6. p. 18._ Oiseau Mouche, dit Hupecol de Cayenne.—_Buff. Pl. enl. n. 640. f. 3._ TUFTED-NECKED HUMMING BIRD.—_Lath. Gen. Syn. 2 p. 784. 55._ * * * * *