Cade 1958 5 August Jugo Lake - summary of occurrence - also other micovtines compared. Again at this station M. oecanomus appears to occur only in tightly localized population units widely dispersed from one another. The habitat is wet sedge- groves - willows swales or hillside meadows or similar habitat along hillside damage swop or in wet meadows of the river terraces, but in all these areas -including the large terrace meadows above and below Jugo Lake, the areas of frequent fresh sign are limited - usually not more than 400-1000 square feet in area. Large continuous densities do not seem to be present. The sector of T2 from stake 4.0 to 7.2 represents one such local "hot" area. So also does the sector of T3 from stake 2.8 to 6.8. (See trenched data). The dry rock shrub - dwarf shrub - heath habitat was again this year virtually devoid of micovtine rodents. The quernel along T4, I am now convinced, is situated too far out at the margin of a drainage symbol of redge zone plants. It is too close to the upland heath type vegetation. Had it been placed 20 yds closer to the drainage