The burning of the cane was very heavy this afternoon as we were going north from Tananzuchale. Perhaps they are trying to get it all done before the rains come. At any rate the air is thick with smoke, there is a pleasurable gloam over everything & the sun hangs like a red disc in the western sky above the Sierra. May left Ciudad Valles about 10:10 A.M. after having got gas, water and ice. Drive north on Mex. Hwy. 85 in order to pick up Mex. Hwy 80 across the Sierra and then Mex. Hwy 161 back across the Sierra to Cd. Victoria. Stopped at several likely locations Anelytropis habitats without success. Those stops at which we got other specimens are as follows. 21.2 miles S. Tamaulipas - San Luis Potosi State line on Mex. Hwy 85 in San Luis Potosi: Thorn forest on either side of a creek bed with small isolated pools of water. Deep cracks in the ground from the severe dryness. Sceloporus variabilis. Sam and Jim each got me and many more were seen