no guinea pigs or tree-trees, nor their droppings. A few burrows of fairly large size were present, all opening on the mound, and one of these had fresh mouse droppings. Passed a similar but less impressive area somewhere south of Carhuarayo, as a habitat for the Darwinii (further north), Carhuarayo looks unpromising, but there are some rocky hilltops east of the town. In general the terrain is similar to the flat "but" country west of Titicen. About 4 miles N of Carhuarayo on a flat Pampa is another set of mina mounds larger and more distinct than the others. About 1 in 20 of these has a hand-size burrow in the side, many showing fresh digging. There are a few burrows in between mounds, but not many. However, there are similar burrows up on the hillside where there are no mina mounds. Two burrows showing fresh digging also had feathers and a wooly bird's nest lying on the ground at the opening; probably corparative digging out Peru miners. Put out about 15 museum specials and 6 gump traps in burrows in mina mounds. Also about 25 museum specials along a wall upon the hillside - grea and small Churigno bushes (about 1-2 feet tall, thorny, red blossoms). Jacklighting among the mina mounds showed nothing. Aug. 17 About 1/2 inch of snow overnight. No tracks in and out of mina burrows type 6 a.m. except 1 mouse. Type 2 & m burrows had 1 Hesperings. Another set of more tracks that