Greene, H. 1988 1 January La Selva Biological Station, Heredia, Costa Rica We had planned to leave today and spend the next few days in Monteverde, but problems with car rentals caused us to decide this morning to remain here until the 6th, for the sake of fewer hassles and more total time spent enjoying the forest - this after spending most of the morning packing! At lunch a visiting bird watcher told me that yesterday he saw an adult iguana iguana on the ground w/ a brown snake snake in its mouth - he felt unsure as to whether was trying to eat the snake or just kill it. In the afternoon I walked to SHO 900m and back, with a sidetrip to CCL 700m, without seeing any snakes. A visitor told me he saw a coral snake that was unequivocally Micrurus nigrocinctus struggling with an unidentified brown snake in the morning. 2 January Rained hard most of the night and inter- mittently in the morning. I walked to SHO 900m and back, with a side trip to CCL 700m. At 0959 hr. at SHO 250 m I grabbed a skinny-feeling Chironius grandisquamus as it moved rapidly off the trail into "plot" vegetation (F, 1260+735 mmn, 468g). The snake thrashed, inflated the anterior ~ 1/2 of the body, and repeatedly struck when seized. While being palpated and measured,