cider with scattered bunchgrass; about also the caecoboro-varios pass. Nowhere is there tola, as in southern Peru. From Oraya north is lush glassy bunch and otherwise, much like it acenda Purmanais. No tola, bunch, or anything larger than the grass. Road unsaved and rough all day except a tarred stretch from Oraya to the Tarma turnoff. Set about 20 traps along stone wall in grass. aug.16 Night clear & cold, heavy frost. Water bucket in car froze, mice wrapped in newspaper in car froze solid. Traps caught 1 Hesperomyz and 5 Ph. pictus. P. thiba [illegible] found some minor mounds for Dr. Scheffer. At the north end of Lake Junin, 13,500 ft, about 2 miles N of Carhuayup. They are on a pampa sloping apparently downward toward the lake and are spaced 6 to 12 yards apart, none more than 2 feet high, mostly about 1 foot. Vegetation is low grass and forbs, not unlike the Soco loca two pampas, with no vegetation higher than 3 inches. Ground is very stony with rocks up to 8" diam. Road cut reveals a fine soil with rocks like conglomerate from at least just 2 feet down. This area of mounds covers between 1 and 4 square miles, borders around it but not in it. It is used for grazing, and over parts of it parallel stripes of turf have been removed for fuel, but I do not think the mounds are man-made. I walked through the area and saw