Seib, R. 1982 Tapachula, Chiapas Mexico 20 Aug told me the name of his dialect but I couldn't hope to pronounce it or try to spell it. A very far approximation would be "Tok-yo." We left Monte Perla and drove back to the pickling rock under hot, clear skies. The rock was in direct sun and scorching hot. To protect the snakes from rothing, I laid them on a cloth sack & tried to shade them with my body. Allison and I worked for about two hours here. During this time I noticed that the big rock was shaking because I heard the sound of it knocking against smaller boulders in front of it. I casually mentioned to Allison, "The rock moves." She said, "It's an earthquake." Later while we were measuring & she was sitting on the rock, she mentioned she could feel tremors, which didn't move the rock as much as before. Our earthquake was the highlight of the day. Drove on to San Jeronimo at 16:45. They had 44 snakes, of an interesting diversity. There were 4 Adelphicos, 3 Coniophanes, 3 N. diademata, 20 N. sebae, 2 Scaphiodontophis 2 Xenodon, & 4 Micrurus! One Micrurus regurgitated the last half of a gravid female snake with a long tail (to be I.D'd in Berkeley). Processed all these snakes