What is "spiza americana"

Dickcissel \Dick*cis"sel\, n. (Zo["o]l.) The American black-throated bunting ( Spiza Americana).

Bunting \Bun"ting\, n. [Scot. buntlin, corn-buntlin, OE. bunting, buntyle; of unknown origin.] (Zo["o]l.) A bird of the genus Emberiza, or of an allied genus, related to the finches and sparrows (family Fringillid[ae]).

Note: Among European species are the common or corn bunting ( Emberiza miliaria); the ortolan ( Emberiza hortulana); the cirl ( Emberiza cirlus); and the black-headed ( Granitivora melanocephala). American species are the bay-winged or grass ( Po["o]c[ae]tes gramineus or Po[oe]cetes gramineus); the black-throated ( Spiza Americana); the towhee bunting or chewink ( Pipilo); the snow bunting ( Plectrophanax nivalis); the rice bunting or bobolink, and others. See Ortolan, Chewick, Snow bunting, Lark bunting.