rufoniger

Updated: May 22, 2025

Our old friend Midas ursulus, of Para and the Lower Amazons, is not found on the Upper river, but in its stead a closely-allied species presents itself, which appears to be the Midas rufoniger of Gervais, whose mouth is bordered with longish white hairs.

Henry Walter Bates - The Naturalist on the River Amazons