E. Hesse 1982 Journal 22 Km E (by rd) Trinidad to Tres Rios, San Jose Prov. CR 18 July cont Phil caught 1 P. nudipes 1 Reithrodonomys creper 3 Heteromys oresterus (1 dying) All Heteromys were caught in the same approximate area, including the one Duke caught yesterday. Overmature forest, rotten logs, dense canopy, moderate understory w/ leaf litter. Duke karyotyped the two dying Heteromys while Phil + I skinned them + 5 other mice (Reithros + Oryzomys, 1 Peromyscus) that were probably not going to live, either. Killed the weasel, (Phil did) and then photographed it - beautiful animal. A shame to collect it, almost... Left the trap site ~ 1145, heading W. along Hwy 2 to try to find a locality near Tres Rios that M. Hafner wrote to Duke about. Stopped for lunch along the way - food is amazingly cheap. I had 2 chicken tacos, a chile stuffed w/ chorizo, an order of fried plantains, papaya juice + a coke for ~$1.50. We spent a good part of the afternoon driving down dirt roads to the SE of Tres Rios to try to find a patch of mature forest near the mts. Mostly, we kept running into rather run-down "suburbs" of San Jose. The area still has patches of forest, but most of it is very disturbed w/ lots of brush, bananas + coffee. We finally came across a patch of marginally dense forest at the end of