Koford Cynomys ludovicianus August 20, 1955 Nr. Ft. Collins, Colo. contour about 10 yds. below irrigation ditch banks, 170 points (1" loops). Results, on basis 100%: 46 veg. hits; after Bde 16, She 7, Asm 2, + Sol, Dpa, Bgrs (2 total). || Bar an erate when much fresh construction, Chrysothamnus brush undermined at sides, and many slate cut, so only about 8" tall. August 21, 1955, at 11 a.m. of clear day, at Sec. 3 hors position S.W. of Ft. Collins, saw 16 C.L. in 2 A courses area on N.-aspect slope. Then fairly evenly scattered halfway between fence & paralleling irrigation ditch. Now close to ditch or close to fence. || On opposite (S.) slope where no irrigation ditch or dam, fewer C.L. Here She 1-1½" tall downwind, more than 50% bare ground. Asm stalk every soil niche. Small patches Bde & Bgrs, much of it dead stubble only, 4 not over 1" tall. Also present: Cur. lon., atriplex, Bahia (Fresh She cuttings.) Dye. papo., Psor. ten., Sphaerulae, (Some siter papa 30% of veg.), Chenop. all., Lira, Sol. a little Muhl. ton. Dpa on some mds., || Walking across their slope as a caton. (5-10%) I took 100 loops (step-set.); 27 hits of which Bgrs 10, Bde 2, Asm 2, Mto 1; She 7, Dpa 2, other forbs 3. (Some false (as Lappula) now dried up & gone; also Lepidecin.) This count in area where many burrows. || Then visited Sec. 4, where a barley field, burned unploughed flattin ground. On N.-aspect slope in barley, barley sprouts & not harvested, 4 several C.L. saw some burrows as earlier this year. More burrows than this spring: many new & shallow; some pinkpods for food. Mounds large (clay), Barley cut 10 to 20 yds. from some burrows. She prominent in field now. 1 round 8' wide, 1½' thick, of mixed fine shale and clay. Backfill ground in vicinity burrows 222 +76 +50