Koford 3/6 Cynomy s ludovicianus November 7,1955 College Park, Md. providing information. Photo B24769, S.E. Piper, Sept. 19,1922, 2 mi E. Aurora, Colo. Shows C.l. burrow in area 6' tall alfalfa when cover about 50%; taller recent (by C.l.) alfalfa in background. C.l. eats al- falfa. / B30769, S.E. Piper, June 11,1926. Dan Berrin mds. said Ranch, Confer, Colo- 7300 ft. Mountain meadow. Burrows to be Cyn. lud. at upper limit range. / Same plotn alfalfa field infested by Zani prairie dogs. All show widely separated tufts alfalfa, not dense stand. / B42927, L. Knowles, 1934. Fall River Co., S. Dale. Cornfield with prairie dogs. 1/2 for veg. is weeds. Cover about 30%. Dogs cut corn stalks. / B18601, J.S. Silver, July 25/1918. Aurora, Colo. Area in wheat field destroyed by C.l. Tufts 6"-12" tall; much open ground near burrows; tall wheat backgrounds. / B18602 J S Silver, July 25/1918. Aurora Cornfield destroyed by C.l. Tall corn backgrounds. Den ora, Colo. Few stalks over 1 ft. tall standing. Lavender prominent (80% of veg. where C.l.), but only 20% cover where C.l. / B36042a. By A & Oman, 1929. Clark Co., Kansas. Wheat 6"-10" near C.l. burrows; to 2' at short distance. / B59602. D.A. Spencer 7/17/40. SW Colo. Oat field near Manco, Colo. Seed heads cut & eaten in gradually deepening semi-circle from borders field, some accompanying info. / B19716, N.H. Kent. July 2,1919. New Mexico. Burrows in wheat field. / B36696. Aug. 1, 1930. R.S. Zimmerman. Mr. Green River, Utoh (Cyn. ludovicus probably). Mds. in good tomato crop March 19,1930. Tomat.