Koford 1955 90 Cynomys ludovicianus April 14, 1955 NE Larimer Co., Colo. been grayed during the 12 years he has been here (still has heavily grayed looks, hairier - due to C.l.?). He had been thinking of gassing dogs on horse pasture. // As early bare grounds nears Lotton, low Kaibabia commences, then mixed with Distichlis, then pure Distichlis of theirs. April 15, 1955 NE Larimer Co., Colo. I drove to Rudy Ackerman's, about 20 mi. N. of Ft. Collins, on Dec. 13, when took 0746, saw 1 at about same burrow. Put steel traps there. (Caught a cottontail by afternoon). I was not able to see any other C.l. this area. // Talked with Rudy. He said he did not know what caused large law regular wounds at N. and S. Dec. 13 - I think Pogonomyrmex largely responsible. The wounds rather rocky, about 10 yds. across, of many without wounds on them now. // Wellington prairie - saw dung beetle rolling C.l. during yesterday near mouth Lunnour. Collect this? // Dec. 13, when 0746 shot, has fair cover Muhlenbergia & Bartelaea (?), only about 10% bare grounds, some Opuntia, some 3" high Atriplex canescens bushes. // Rudy said formerly C.l. in Dec. 12 to N. near old Brixton place, & formerly many on Clarence Munn's place between two branch creeks about 2 mi. N.W. of Ser. 12. He said he & another man shot up 8 lopers, 22 shells this pre day shooting at C.l. without getting out of track. On Dec. 23 he said then had been dogs or long as he could remember. When CCC had poisoned the region, poison ineffect- ive in that area. // On Dec. 23 I set 12 steel traps. Many digging by prairie dogs to 4" deep. At bottom many was eaten off top of root. Most roots were white inside with yell-