Abstract
This paper is an account of the distributions of the Anthocoridae of the Pacific Northwest (British Columbia, Washington, Oregon, and Idaho), with notes on the life histories of the more common species. It brings together the published and unpublished data on the family in that area. Seven species listed were previously unrecorded there and five others are new species recently described (Kelton and Anderson, 1962). In 1956 and 1957 intensive collecting was done in southern British Columbia and some material was collected in the Willamette Valley and east of the Cascade Range in Oregon. Specimens were examined in the important museum collections of the area and in some private collections.