July July Cuemidophorus tigris - me caught at the upper edge of the flood plain. Taken by John Wright for tissue culture. 138 Thamnophis cyrtopsis - one small specimen from the upper edge of the flood plain. Masticophis bilineatus - one seen, not collected. Went back into Moctezuma for lunch at the hotel. After lunch took the road east to Huasabas and Granados where we crossed the Rio Bavispe and continued east on the road to Nacozari Chico. Got catched in a big [illegible] rain storm as we reached the crest of the mountains east of the Rio Bavispe. Rained off and on through the rest of the evening. Stopped at El Coyote for dinner and then took the road to Huachinera about 0.4 miles N.E. El Coyote (by road), Son. It rained continuously as we put up camp & until about 2:30 PM when it cleared. 12 July Woke up shortly after sunrise to get the first look at the campsite we had chosen in the dark last night. It consisted of a fairly wide stream bed running between