While looking through the species of the genus Pachycephala in the Leyden Museum, I met with two species which will prove to be new to science. They were collected in 1878, in the district of Macassar, South Celebes, by the well-known Dutch Naturalist Teysmann, and they will form the second and third species hitherto with certainty stated from Celebes, the first being P. sulfureiventer (Walden) from North Celebes.