(Trochilidae; Ϯ Eastern Wedge-billed Hummingbird S. geoffroyi) Mod. L. schistes with a wedge < Gr. σχιζω skhizō to cleave, to split; "SCHISTES ALBOGULARIS, GOULD. ... Remark. This species is very nearly allied to the Trochilus geoffroyi of authors, which with the present bird I have deemed it requisite to raise to the rank of a genus." (Gould 1851); "In its singular wedge-shaped bill ... it differs from the members of all the previously established genera of this family ... I feel certain that this peculiarity in the form of the bill is adapted for some especial purpose." (Gould 1861); "Schistes Gould, in Jardine's Contr. Orn., 1851, p. 140. Type, by subsequent designation, Trochilus geoffroyi Bourcier. (G. R. Gray, Cat. Gen. Subgen. Bds., 1855, p. 24.)" (Peters 1945, V, 126).