Koford 266 Cynomys ludovicianus September 19, 1955 Nr. Ft. Collins, Colo. Lava, Sha., Cynap. all on some. Cyn ap some abandoned (only grou). Dr. girt Cyn leaves dry, & Brgn seedstalks. One about 2mm. bed, their Sha., + Sphacelaea, Polyg. avic. Bde. Hoffmann. Applop- appus, Chrysothamnus, Deterenigia, Liatris in lbson. // along irr- igation ditch bank (mud'd water bottom) much Sha., tall Xanth- ium, green Cyn, Cuphal. mang. But little evidence foot-seeking by C.l. thus now. Burrows in ditch bank rare, but are be- tween two tall Cuph. mang., 1½' tall & 1½' apart, 4 much cut Dyga. paps. next to it. // No evidence recent cutting Sha.; low palatability because starting to dry? Many areas of Bde scratched up, Apparently by C.l., with much loose cut grass blades on (these can be scraped off with fingers, show- ing stiles of bones beneath, & rare stalohs). This go sommar that Bde evidently the sought food near, Brgn near here. This on slope where most C.l. // Burrows on upslope side ditch only at W. end, Towns road, when slope less than 10%. Much Brgn - Bde on this upper slope. // When Helianthus near burrows, not cut. In local area much down Lug apill. or purple Solanum ; in low-areas Aster ericoides (7) + Balia oppositifolia . // Some burrows apparently dug out when wet which, for wounds covered with hard dried mudballs ½" to 2" diam. // Much Cyn leafage dried up wreater near c.l. burrows. // Two burrows about 1'diam. used, or shown by new cavities. or mds. Some burrows had old Xanthium leaves on wounds, end a side cut off - probably eaten in winter, the now 40 yds. from X. plants . Chrysothamnus about 6" tall on W. ¼ ton; cut by C.l., evidently; just