Koford Cynomys ludovicianus January 24,1955 Larimer C, Colo. actively by Norton Meier in 1953. Bently rolling grassland. No rock outcrops. Most burrows in one draw about 1/4 wide wide. Colony in secta about thus: [illegible] sand Dec.29 Many harvest ant (Pogonomyrmex?) mounds this pasture. Mounds about 3/4" high, dry. Ground hard. Soil of mounds with much gravel. Their gravelly soil covers circular area about 10' diameter, & has no apparent vegetation. Burrows here wide spaced - average about 50 yds. apart. Mounds only about 12" high (due cattle trampling?). Are sanddirt's favorable for mounds ants also favorable for C. L.? This property apparently that of Mr. Von Vihle of Ft. Collins. Max. slope with burrow about 10%. Down a flat but vast as slight slope. No brush or bunchgrass cover. Good area to study some physical en- vironment & burrow spacing. I Drew to vicinity of Fipple on U.P.R.R. To vicinity of reservoir on Dry Creek (Sec. 33, T7N, R. 69W. Deepwood (Meier) claims on Wedman land near this. I did not find them but rolling land along gulch appeared favorable. Grazing had apparently been favorable and drew to Owl County times to Ft. Collins without seeing more C. L. burrows. January 23,1955. Nr.Ft. Collins, Larimer C. Visited area of burrows in wide pounded draw some conta line between Secs. 3+4, T7N, R. 69W, just W., County dumps, & Land leased (?) by Ross of Ft.C. Many burrows in bottom + extending near foot of bordering slopes. On steeper inclines, soil thins & more a layer below. 2.3