Harper 1939 July 11 Cistellus lateralis Twin Buttes, 4300 ft., 2-1/2 mi. S.W. Steamboat Mt., Shawnee Co., Wash. An adult ♀ with 5, 40 mm embryos was shot in an open clearing well covered with grass and huckleberry. The immediate area was flat [illegible] and the soil sandy and rocky.