(syn. Syndactyla Ϯ Peruvian Recurvebill S. ucayalae) Gr. ανα ana upwards; χειλος kheilos lip, edge; "ANACHILUS, new genus ... In general size and color resembling Automolus rubiginosus rubiginosus Sclater, but structurally more nearly related to Anabazenops fuscus (Vieillot), the bill, however, agreeing in shape with that of Megaxenops parnaguæ Reiser ... culmen straight, except at the extreme tip which is slightly decurved, the gonys strongly recurved ... TYPE.— Anachilus ucayalæ Chapman." (Chapman 1928).