Pearson - 1998 10 caught 1 Abro longi. There were numerous tangles of recently felled nine trees. ? in a MS, nothing in Shermans. Anita's line of 36, half Shermans, caught 5 Abro longi. Total number of traps out was 110. Hence zero trap success for Oligoryzomys and 7.1% for Abro longi. Released none, dissected all; all breeding or close to it. All livers were OK, almost all lungs ok. I guess we have shown that the scarcity of Oligo at Espejo Chico 2 km away is not due to overtrapping last spring and autumn. Light rain about noon time and still drizzling at 3:30 when we left. A different caretaker, young guy, agreed that there were few mice, even in the barn. We drove "north" from Ruca Malen looking for trappings sites with Rosa. Oodles of lupine along the road, not quite blooming. Lots of rosa, but no signs of old fruits on it. Stopped on a side road between the road and Lake Correntoso, about 4 km ESE of our campsite at Lago Espejo Chico. This is on the old roadbed that was cleared 25 years ago, deep layers of pumice. My line of 50 traps, half Shermans, covered the old abandoned roadbed with bamboo, Berberis, lupine, rosa, big old coihues, big chaura-like bushed, and many piles of old old tree trunks left over from when they cleared the forest to make a new road, which never got made. Wee drizzle, then cleared. Anita set 50 traps, half Shermans, in a line of Berberis, bamboo, and rosa. Then another line along logs of 10 snap traps. Hence total of 110 traps. November 14- Lago Correntoso. A couple of showers during the night, morning mostly cloudy but clearing about 11 a.m. .a dusting of snow on the the trees high up on the other side of the lake. Only one of my Museum Specials was sprung and empty, hence the rain not a problem. My 25 MS held 3 Oligo, 4 Abro longi, and 1 Geoxus. My 25 Shermans held 7 longi, 1 Chelemys, and 1 Abro olivaceus; released the Chelemys and the olivaceus.. Anita's 23 MS held 4 longi, and 1 Loxodontomys and a wren, Her 23 Shermans held 1 Geoxus, 1 Loxodontomys, and 2 longi. Total in 110 traps was: 3 Oligo (2.7% success), 16 Abro longi (14.5%), plus 2 Geoxus and 2 Loxodontomys and one escaped Loxo or Abro olivaceus. Total trap success 24 mice (21.8%). Four were discarded: two Geoxus, their data lost somewhere in the computer but consisting of one adult male with big testes and a female with 4 embryos, plus two Loxodontomys as follows: Loxodontomys m. 167x79x27 28g testis 3.5mm; sv tiny; liver ok; lungs ok Loxodontomys m. 170x78x28 28g testis 4.5mm; sv tiny; liver & lungs ok