Hanken, James 1975 Journal Mexico trip - 30 April 0900 Stayed overnight in a "Motel 6" last hrs. night in Brownsville after our license plates still had not arrived by late afternoon and the weather conditions (essentially identical to those of the night before) promised an equally enjoyable evening. We spent the day of 29 April in the Brownville area visiting various localities for camps and buying more supplies. First AM then AM we visited a canal along Hwy 281, mi. W La Paloma, Cameron Co., Texas. The area is essentially broad agricultural fields (cotton) criss-crossed by variously transected by irrigation canals 6-70' wide, 1-2' deep, with the water surface level ~10-12' below the field fields. Grass + scrub thickets line the canal with occasionally thorn forest outcrops running a good length of the canal. The canal was variously overgrown and at time choked with water hyacinth. We tried pulling out hyacinths and examining the roots for Siren, but none were found. Sam Sweet collected two Thamnophis proximus, one at water's edge, the other in the water. In addition, he saw at least