KAYANS
The Kayans of Dutch Borneo are not numerous. Outside of Long Blu on the Mahakam they are found chiefly on the Kayan River in the large district of the northeast called Bulungan. They occupy the lower course, reaching not quite to Long Pangian, though having settlements there. Three subtribes are known to exist here, Oma-Gaai, Oma-Laran, and Oma-Hiban. The first named, also called Segai, live in Kaburau, Bruen, and Long Pangian. They appear somewhat different from the rest in language, and they abstain from rusa (deer) as food, while the others eat it. They file off ten teeth in the upper front jaw. At the headwaters of the Kayan River in Apo Kayan lives a subtribe, Oma-Lakan, said to number about 400; these do not file the front teeth. In Chapter IX is described a recent head-hunting raid by the Kenyahs on these Kayans.