P. PEARSON 1957 Oct. 7 Trope had 1 Ph oxida?, 2 long-tailed Oryzomyi, and 3 absolom solivensis. The big, active ante present at almost every trofe site when I set the trap turned out to be highly carnivorous, but they left the corn meal bait alone. Much Nothura foraging in early a.m. Heavy dew. Drove from 9 to 1; mostly curly bunchgrass, as at overniglt camp, up to summit, then good ichin and Margyriapus from Sana north. Stopped early because it looked like good Phyllothe country and the road for ahead seemed to go through poor country. Here seems to be lower edge of ichin and upper edge of coetus-thorn. Two boys of trope set along road-running wall. Lots of squaro, fuzzy coetus, low opuntia and other corti; thorn bushes up to 5ft high, pallom pineapple as at Tilcara, small shell as at Tilcara, ichin, and assorted small shrubs. Reminiscent of Juncura (which is not far away) but no sphedra, reminiscent of Tilcara, 8500 but grassier. Many Octodon droppings. Evening clear & windy. Ran half the trap 8-9 and had 4 Hesperomys, 2 Ph darmini, and 1 what looks like Rh-nogalaria, very much still alive in the trap. Shot 1 Marmosa in stone wall near big thorn brush. The locality about 25 mi. SSE Camatagua, 11,500ft; Tarija. Actually there are a half dozen hats here that call themselves Ciengillas, but not on map. Oct. 8 Much rotomess. Five more Rh-nogalaria making 6 in all (this is considerably possibility that these are Androomyi, not nogalaria); a total of 4 Hesperomys; the 1 Marmosa shot; and 15 Ph. darmini. All of the nogalaria on the first part of the line, and most of the darmini around the corner on the second part.