Koford Cynomyx ludovicianis May 22, 1955 Medora, S. Dakota. In bottomland area among floodland butter. Yesterday saw one Opeyto in Johnson Plateau colony. Pellets of fur (mice), grasshopper, insects. Bulo pellets of mice & insects, 4 Sylviolagus, no Cynomyx. May 23, 1955. Set 12 traps (live) on lower Paddock town at burrows where C.L. seen. Apparently only about 15 dogs (not wild. 3 pairs. seen on burrows) in 30 A. (est.) colony. Dogs scatted over colony, not in any groups. // Visited Senny Lotton colony. Highest pop. at foot of steeper slope, not a flattest low area. W. spores. In a rather dimpled area, a brown leaf-like sphenocera, sphenocera, Plantago purshii present, 4 closely cropped grasses. Bolo saw some yesterday, much scratching of ground around burrows, to 8' distance. Some pawing of outside wounds with mares. Much Sphenocera on lower flat area. Same area 1000+ sq. ft., much Plantago purshii 1" tall (blue-green aspect). Patchy pure Agropyrum smithii, & on lower slope towards much juniper 3' tall Artemisia cana. at N. end, much of a purple-brown green, not Agropyrum (?). // I shot a 07. Both noted to tail. Tester 12mm. long. wt. 1140gms. Stan. 540gms. Cane. 80 gms. Stan. Schedoweder?. Held 60% green grass (= stipa? - eroded edge), 10% Agropyrum smithii, 30% small green pulvinate leaf. Old or lying tooth in. 5; femur 54; epiph. fixed). // Loren Lang said that in April when receding Johnson Plateau, he saw a C.L. very young to another burrow in un- seeded ground. // On Scott Creek town, just outside pole, poisoned Aug. 1952, saw 25±C.L. shot out. Martin area above a spring. Formerly large town, perhaps 80 A. Much Sphenocera, Agro. smithii grass, & Taraxacum that area. Horses grazing, & prob- ably cattle too. At Nord town, no C.L. seen. In same area of mounds, Artemisia cana coming in & seed stalks of Art. bigida