Koford Cynomyx ludovicianus August 15, 1955 NE Larimer Co., Colo. 6 in. are max. (4 3/4 bound). In area thus of greatest burrow concentration, spacing between 10 consecutive was 6 to 27 yds. (ave. 12.6 yds.). In gird, impossible to find more than 4 or 5 burrows for currently less than 20 yds. apart. In gird, spacing ave. about 30 yds., where fairly many burrows (from food, wide space?). // What happens to eutenic territories when burrows wide spaced, populations low? Are most eutenic in areas between rivals, not worring them. // Sha flower: a blue flowered Salvia, purple Solanum, Eutriaria, Verling bacteria. // Difficult to correlate range credit + population here because area of range to sample unknown; dogskin large area may depend on swale seg. in small area. // Visited Sec. 7/10 colony 12:30 p.m. to 2:30 p.m. Saw 1 Agnula in air, 1 on ground at edge colony (hilltop), + 2 Bites (Captor?). In air over colony. No carnivore nests or soil badger digging. Much 10" Eustria cut here (why not in Sec. 23?). Soil less clay than Sec. 23 (silt from 5.6) + pale tan in color. Many Pogonomyrmex rds. on slopes. Salvia is main plant on mounds; some Chenop. (lepto or all.? ). Line opuntia present, not abundant. Atriplex eat much when occurs. 13 digging for roots noted. Much was grass than Sec. 23, flat NW part colony: took 100 step-loops where many mounds as 5-10% 5 E slope. Be- sulto; 54 hits on live veg. (Mto 23, Bgn 17, Aristida 5, Chenop. 2, Eust. 2, Ska 4, Schedon.). In gird, then, seen about 50%, mainly Bgn & Muhly 1-2" tall. // On S. central part as slope where concentration burrows, 100 loops gave 47 hits (Bgn 18, Mto 14, Elas. 3, Ska 1, Aristida 1). Adjacent was more Bgn in bottom shallow-soil. Air in nearby area, N slope bordering flat where 85% cover 90% being Poda (some Dysa, Eustria), 100 loops gave 35 hits (Bgn 31, 171 221