Journal Hahner, M.S. 1977 5.5 km. S , 13 km. E Amecameca, 3680 m., México, México. 5 August (cont) Trapsite : main road - large valley (bunch grass) JCH set in this area (vehicle rolling hills (scattered pine trees) hill X1 X2 X3 X4 X5 X6 ravine N 1/8 mi. X7 X8 x9 x10 x11 X12 X13 X14 X15 X16 = pine trees x = set X = successful set. (subscripts indicate number of traps) 1500 we set out about 15 gopher sets apiece, John on the west side of the road, I on the slopes to the east. The vegetation was principally bunch-grass with a few scattered lupine and other annuals. There were patches of conifers although the principal gopher activity seemed to be in the unforested meadows. The soil was "ashy", formed of fine, dark volcanic ash. We quickly were aware that Papogeomys were again present due to the extreme large size of certain of the burrows. We concentrated our trapping efforts on the obvious, smaller Thomomys burrows. By sunset we had pulled-in 12 Thomomys umbrinus, 3 of which were alive. The animals were