The Purple-Throated Chatterer is assuredly one of the most beautiful of the feathered race, at present known; the general colour of the plumage, a blue of most transcendant brightness, and highly changeable, varying from a fine cærulean, or azure, to a green of equal delicacy and beauty. There is an intermixture of black disposed in spots throughout; one half of each feather, from the base, being black, and only the tips blue, so that the plumage appears more or less spotted with black, as the feathers are ruffled or misplaced from their natural position. The region of the chin and throat is of a beautiful crimson purple, whence its name of Purple-Throated Chatterer. The greater wing coverts are black, varied and spotted with blue: the quills and tail black with blue margins: the bill black with the lower mandible rather paler: the legs black. This brilliant species of the Ampelis tribe has been sometimes denominated the Ultramarine Thrush, and not unfrequently the Ultramarine Starling: its size resembles that of the Starling, and there is also a general similitude in its form and manners, but it is, nevertheless generically distinct. Inhabits Cayenne, and probably some other parts of South America. ------------------------------------------------------------------------ [Illustration: _15_ _London. Published as the Act directs, by E. Donovan & Mess.^{rs} Simpkin & Marshall Aug.^{st} 1, 1822._ ] ------------------------------------------------------------------------ CONCHOLOGY. PLATE XV. MUREX FOLIATUS FOLIATED MUREX OR, FOLIATED ROCK SHELL. UNIVALVE. GENERIC CHARACTER. Shell spiral, rough with membranaceous sutures: aperture oval, ending in an entire straight or slightly ascending canal. * Sutures expanding into crisped foliations: beak abbreviated PURPURA _Gmel._ SPECIFIC CHARACTER AND SYNONYMS. Three rows of foliations: aperture one-toothed. MUREX FOLIATUS: testa trifariam frondosa: apertura unidentata. _Gmel. Linn. Syst. T. 1. p. 6. 3529. 174._—_Martyn Conch. 2. t. 66._ MUREX Purpura alata, testa triangulari, transversim costata trifariam frondosa, frondibus alatis membranaceis instructa cauda recta clausa, labro latissimo, labio adnato, apertura subovata, fauce alba. _Chemn. Conch. 10. f. 1538._ * * * * *