Bill short, strong, conic, base trigonal, sides compressed, culmin elevated, upper mandible towards the tip deflexed and notched, under mandible shorter and straight, the base thick, the margins of both inflexed. Nostrils small, the base feathered, the aperture round, naked. Wings moderate. Generic Types. _Tanagra Jacapa, tricolor._ _Motacilla velia._ Lin. _Pipra musica._ Lin. * * * * * SPECIFIC CHARACTER. _T. olivaceo-viridis, infra flava; vertice cinereo, striga oculari auribusque nigris; rostro gracili._ Olive green, beneath yellow; crown cinereous, eye stripe and ears black; bill slender. * * * * * The Tanagers are a numerous, and, in general, a beautiful tribe, including some of the most richly coloured birds of America; to which continent modern ornithologists consider they are exclusively confined. M. Temminck proposes to unite with the Tanagers, several birds scattered in the Linnaean Genera of _Lanius_, _Loxia_, _Fringilla_, _Pipra_, and _Motacilla_. This view of the subject, it may not be superfluous to add, is in perfect unison with my own. In fact, I had meditated a similar arrangement; but the appearance of M. Temminck's work rendered the publication of my own remarks no longer necessary. The bird here figured belongs to that division which forms a transition to the _Sylviae_, from which they are readily distinguished by the thickened base of the under mandible. It is not uncommon in the West Indies; but I cannot find it described either among the Tanagers, Finches, or Warblers of the Linnaean school: in this, however, I may possibly be mistaken. It is represented the size of life, and is sufficiently distinguished by its specific character. * * * * * Pl. 175 [Illustration] AMPULLARIA leucostoma, _White-mouthed Apple Snail._ * * * * * GENERIC CHARACTER.--See Pl. 98. * * * * * SPECIFIC CHARACTER. _A testa ovata, rugosa, epidermide olivaceo-fusca; labio exteriore tenui; apertura alba; umbilico vix clauso._ Shell oval, wrinkled; epidermis olive-brown; outer lip thin; aperture white; umbilicus nearly closed. * * * * *