Cynomy s ludovicianus May 6, 1955 Nr. Ft. Collins, Colo. at first he thought possibly C. leuciscus . || With Dr. Wasser of Range Mgt. Dept., Colo. A & M, visited Spring Canyon Dam colony. Beside the Platte; Cogwheelia (=Lonatium orientale in Harrington), common, 4 rare Sphaeroclea too prominent (1" high). Sprinkling of Agropyron smithii . Wasser noted pasture only fair because of small proportion of mid - grasses. Ungraded, he thought it could look like that across road to W., when some apparent remains old mounds. Much Solanda pestifera, growing here very about an inch high. || At dump colony, 5 E 1/4 same section (33), much Muhlenbergia torreyi , with patches pure Buchloe dactyloides, Poorly used (Eria epillaris ) common on little spots (indicate poor condition). Vicia americana, Nothochloa cuspidata, Aristida longipetala, present. Very prominent is yellow-flowered Mucuna di- variation, form of Lonatium orientale . Again pasture conditions only fair. Little Agropyron here. Eria + Sphaeroclea on mounds. || At Sec. 3 colony, heavy grazing 20-grain shot, but patches pure Buchloe, smaller patches Bouteloua gracilis , 4 much apparent Agropyron smithii . When latter grew, much cutting & pecking of said by wind action - little when Buchloe. Near both on was Distichlis stricta, 4 new Kochia scoparia. May 7, 1955. Traps in 5 E 1/4 Sec. 33 held 0. Tools eye 3 + reset 2 (farther to N.). No activity apparent around burnover at S. end, tho none taken there (1 possible 20 trap gear). Perhaps disturbance at burnover causes abandonment, perhaps is precisely by males or immatures. May 8, 1955. Di same traps toolog 104, fruit 4 taken this colony, Small but pasture not advanced. Changed location, traps (a still