Sept.28 Tilcara. The valley here is full of Lombardy Poplars, willows, a few Ahorn trees, and fruit trees such as pear, peaches, apples, cherries (in bloom), but the hills on both sides are quite arid. Put out 1 1/2 logs of traps east of town and about 500 ft. higher in an interesting combination of short grass, tola, ephedra (these stems but not nearly as tall as at Yurumas), low opuntia, some another cactus, a few clumps of ichn, scattered saguaro-cactae, and much "pillon-pineapple". This is a pillon-forming plant that from 50 feet looks like a medium-sized Tillandsia, but the leaves are exceedingly short-stiffed and stiff & the blossoms are long tubular yellow, much larger than in Tillandsia. This Pillon/pineapple dominates much of my trap line. Many good big rocks, but most or all the holes dominated / pear / by October whose droppings + white urine were abundant. I fogged down from extreme thirst before all the traps were out. Carried here with a great water deficit from Villagon and hadn't been able to make it up at the Hotel Esperanza and on "pops" in the village, so am now drinking quarts of local water. Put out about a dozen more traps along a slightly brushy stone wall near the cemetery at dusk. On upper live - parakeets, humming, sheeps goats Sept.29 TH 3 Ph = copasana grivoviridis in the graveyard line and 7 Ph darwini in the hillside line east of town. Also 1 Abodon on hillside line. at dusk put about 1 log of traps around an alfalfa pasture on the edge of town - stone wall, some brush, and large leafless thornless tree. Pile of twigs, leaves + litter on the ground. This tree has loose shreddy