Koford Cynomys ludovicianus August 4, 1955 CPER, Weld Co., Colo. stand of Bgr. thouraese Bgr seed stolter cut, about 6'/sq. ft., common Chavo. lept. absent, 4 occasional prickly Balanum. || Four 2 or 3 spec- tyto on colony, 4 at Crotalur lay in burrow in C.I. Open water in ditcher in bottom still. Many burrows in flat bottom seed; the mounds small or absent; the earlier there were flooded. Some new burr- ows in SE corner colony, 1 atop slope in BB is farthest NE. In area 14-22W, 6-10S; many (20±) C.L. seen to run from Bgr flat southeast to burrow on slopes. On other lower slopes, many shot new bur- rows seed wider deep. || Expansion to 3 in area 20W, 10S, has increased slightly since July 21, peripheral burrows showing use. (not in E or SE parts colony known). Some burrows made last 3 months have fairly large mds. (to 6' wide, 8" thick). A crater at W. side of the epelorus plot 2'diam., 4'8" high. || The epelorus, tall Solcota in C.L. epel. stands out conspicuously, to 2'3" tall (in cattle epelorus 90% to cut to 8" or less). Bgr seed stolter to 11" in epelorus, rarely that full in cattle epel. of 10% seedstallor cut there. || 8/137, bow hill, full adult g. August 5, 1955 Much rain last night & overcast today; most mounds pocked by rain so hard to judge use. Depressed burrows on flat in Bgr area full of water. At least 3 C.L. cost of E. fence (topped one late p.m. in A'P). Saw a Batis nigra near colony. Family of 4 or 5 juv. Specipty at burrow in ED. At least 9 juv. N. of bottom from 0 to 4 W.; 4 to 10 W. to 10W. (3 or 4 juv.). || Burrow in PC' that was 10" deep June 26 is now date & appear- antly in use. 3 new well developed craters to N. of fence at W. end colony; all have appeared since July 21, apparently. Northbound burrow rarely fisted this area now apparently not used. R2 in PC" is furthest NW showing issue. || Dropped 138 in NE part of A'P; prob. got in 5:30 p.m. || But