Seib, R. 1982 Tapachula, Chiapas, Mexico 23 Aug leaves. Under one of these piles lay a Dymobius morgoratiferus in deep shed. I only noticed it because it crawled away rapidly after I turned the pile. By now it was 12:30 & quite hot. I was concerned that the five caecilians might overheat, so I decided to leave and go up to Monte Perla. We arrived at Monte Perla just prior to rain, 13:15. As soon as we got there, it rained for at least 30 min. The men had not yet returned from work and we spent this time staring into the rain. At 14:00, the men returned. They had 37 snakes. Among these were two species new to the trip: Micrurus latifasciata & Amistridium welliferum. This latter is my first Amistridium from a Mexican Finca. I am trying to maintain it alive for John Cadel, who may want to extract blood & tissues. I'm also keeping Geophis nasalis from Monte Perla alive for feeding experiments. N. sebae & A. quadrivirgatus will also be used in this manner and are common enough to collect alive on the last day, Wednesday. Today's catch also included one of the new Tantilla-like snakes that I can't identify. We left Monte Perla and drove straight to the pickling rock. It was briefly sunny and I took off my