During the summer of 1950, Dr. I. O. Buss, Professor of Wildlife Managemenr, State College of Washington, made a study of the food habits and ecology of the upland plover, Bartramia longicauda (Bechstein), in the Duke River Meadow, five miles north of Burwash Landing, southwestern Yukon Territory (Buss, 1951). Periodical sweepings, at weekly intervals, were made through three transects of the meadow, indicated in this paper by stations 1, 2, and 3. It was from this source thar the collections of insects, including a large number of Diptera, were obtained. Because of the remoteness of the region from any other in which, to the best of our knowledge, insect collecting has been done, and because of the ecological data presented hy Dr. Buss, we feel that the publication of this annotated list of species is warranted.