Eight specimens collected in 1878 by the Italian explorer Odoardo Beccari have provided one or more type specimens for two seemingly identical names given to the Sunda Bulbul of Sumatra, now treated as a subspecies of Ixos virescens or perhaps a full species. These names are Hemixus sumatranusWardlaw Ramsay, 1882, and Hemixus sumatranusSalvadori, 1888. The International code of zoological nomenclature is not clearly explicit on the treatment of a name that when introduced was simultaneously a junior homonym and an objective junior synonym. While both names are available, the junior one is invalid because of its homonymy. Because both names are available, both have type material and this is not identical. Here we clarify the situation and the type material applicable.