In former days, when they were more powerful, the Bukitans would openly attack the Dayaks, and as late as 1856 they destroyed one of the large communal Dayak houses on the Krian, and also attacked the Serikei Dayaks. The Ukits do not take heads, and the Punans do not tattoo. The latter and the Bukitans are clever makers of rattan mats, which are in demand by Europeans and Chinese. The Ukits and the Bukitans reside on the upper waters of the Rejang, Baleh, and Kapuas; and the Punans in the Baram and Balui.
The Banyoks and the Seduans are, like the Segalangs, with whom they have intermixed, probably off-shoots of the Ukit tribe. They have recently merged, and occupy the same village in the Rejang below Sibu fort. Like the Tanjongs and the Kanowits they are clever basket makers.
The Sians, another off-shoot of the Ukits, live below Belaga fort.[20]
All these small tribes inhabiting the interior, though a few are found near the coast, are dwindling away, mainly in consequence of in-and-in breeding. Of some of the tribes of the same stock only a few families are left, and in others only a few people, while one or two have totally disappeared within quite recent years.
The next Indonesian tribes to follow were the Kayans and then the Kenyahs, two that are closely allied, and both, according to tradition, came from the south, probably from the Celebes. They took possession of the Belungan (or Batang Kayan) river-basin, and overflowed into those of Baram and Balui (the right hand branch of the Rejang). These powerful tribes found these river-basins unoccupied except by scattered families of the tribes above mentioned, whom they drove into the jungle. In the Baram they remained undisturbed, as also in the Rejang till recent years. Down the latter river they spread as far as Kapit; at that time both the Sea-Dayaks and Malays were there, and over them the Kayans domineered, driving the former from their settlements at Ngmah,[21] and harassing the latter in the Kanowit, and even in the Sekrang. Eventually, however, the Kayans were forced to fall back before the ever increasing Dayaks, and to retire to the head-waters of the Balui, and now, with the exception of one small settlement, all reside above the Belaga.