Alsea (on Alseya River). Yakw[vi][']na. Kuitc. Siuslaw. _Population._--The U.S. Census Bulletin for 1890 mentions thirty-one tribes as resident on the Siletz Reservation with a combined population of 571. How many Yakwina are among this number is not known. The breaking down of tribal distinctions by reason of the extensive intermarriage of the several tribes is given as the reason for the failure to give a census by tribes.