Koford Cynomys ludovicianus At May 2, 1955 Nr. Ft. Collins, Colorado. 6 out in area 300 yds. long by 100 yds. wide. Two burrow Rod 2. I set traps at 4 burrows where seen (took up former 3 traps). Their located: Stroh ↑ South Ross Ward burrowed To 75 yds. beyond both ends where slope drops seem. Two not used below (5 of) ditch on #1. Traps set at #1 to #4. This a thin population that has survived in reinvolved area. Many around burrows too. Cory, Muhlenbergia, Buchloe, Leucospermum, Cogswellia (purple, 4 smooth bird (yellow flower)), allium, present. No shrubs. Much old digging for roots but now new. Top of one old mound without bur row has new 6" deep hole dug in it. One broken castan has scratchings in soil to distance 4' around as if to repair mound. // Daur: Cirrus low over Spring Canyon Dam today, a few ft. above ground, as if hunting (this on May 1, 10 a.m.). // Drove to Ave. 10, Rudy Achemons, 10 mi., N. Wovely, 4 set 14 still traps at used-looking burrows. As one in 2' tall Atirpley area, same in 4' high braased Atirpley, others where Buchloe & Muhlen- bergia principal plants. Mod. heavily grazed here, but gross santinia covered 60-70 of ground surface. Most traps set a slope < 5%. On a flat area (about 2% slope) in bottom where much Buchloe, small diam. C.L., burrows with mound on one side only. Apparently there an old area being opened up. Probably high water table here some reason so burrow not large (not long continued occupancy). Many had rather large chamber in mounds or castas broken up.