Papilio Pylades is a species of the Butterfly tribe, of moderate size, in comparison with the generality of those which appertain to the same family, the _Equites Achivi_ of Fabricius. The upper surface exhibits an appearance of much simplicity and elegance: the disk is white, and the broad black limb, or border, by which it is surrounded, is marked with a number of spots and semilunar marks of white disposed with much regularity. The disk of the lower surface is also white, but surrounded with a pale brown, or fulvous limb, and marked with white spots in the same manner as the broad black border on the upper surface. A few of the white spots on this fulvous border are surrounded by black lines and spaces. There is also a red band marked with black and blueish spots, that extends along the main or anterior rib of the upper wings, from the base, as far as the middle of the wing, and a spot of red at the base of the posterior pair. ------------------------------------------------------------------------ [Illustration: _14_ _London. Pub^d. as the Act directs by E. Donovan & Mess.^{rs} Simpkin & Marshall Aug.^{st} 1, 1822._ ] ------------------------------------------------------------------------ ORNITHOLOGY. PLATE XIV. AMPELIS CAYANA PURPLE-THROATED CHATTERER. PASSERES. GENERIC CHARACTER. Bill straight, convex, slightly incurvate: mandibles notched: nostrils covered with bristles: tongue acute, cartilaginous, bifid: middle toe connected at the base to the outer one. SPECIFIC CHARACTER AND SYNONYMS. Cærulean blue: neck beneath violet: quill and tail feathers black, edged with blue. AMPELIS CAYANA: nitida cærulea, collo subtus violaceo. _Linn. Syst. 1. p. 298. 6._—_Gmel. Syst. 1. p. 840._ AMPELIS CAYANA: nitida cærulea, collo subtus violaceo remigibus rectricibusque nigris cæruleo marginatis. _Lath. Ind. Orn. 1. 365. 3._ Cotinga Cayanensis. _Briss. 2. p. 344. 32. t. 34. f. 3._ Lanius Ococolin. _Klein. av. p. 54. 6._—_Seba. ii. p. 102. t. 96. f. 3._ Cotinga de Cayenne, Quereiva. _Buff. 4. p. 444._—_Pl. Enl. 624._ Purple-Throated Chatterer. _Lath. Syn. 3. p. 95. 3._ * * * * *