San Luis Potosi Junction of Mex. hwy's, 101 + 80/ South side of Hwy 80. Like the last place essentially. Sceloporus Sam got one inside a cactus. Cnemidophorus Sam got three and Tim got one. There were many around but all very hot and fast. Hypsiglena Under base of rotting yuccas. Masticophis Sam got one Small specimen. Color w/ life: Olive green facing to Dorsum olive green anteriorly changing to brown posteriorly; tips of tail reddish brown. Venter light yellow anteriorly fading to olive light green at midbody and reddish/brown underside of brown the tail. Labials same yellowish color on ventral part of throat. A thin light lateral line anteriorly fading posteriorly. Masticophis flagellum I routed a large yellowish specimen out of a rotten yucca, but it got away down a running hole at the base of a large Acacia. Continued on into Col. Victoria amavis after dark and stayed at the Frank Motel. Went into the Posta restaurant for dinner. Pretty good. The pass over De Sierra just west of Col.