Hanken, James 1975 Journal Mexico trip : Cd. Vallés → fire station W of El Naranjo 8 May 0800 Jun Left Cd. Vallés yesterday AM intent on finding Anelytropsis. Drive W on Mex Hwy 85 to a locality 21.2 mi. S of the Tamaulipas - San Luis Potosí boundary. This was a narrow wash which passed below the road, with no flowing water in the wash but a few small bodies of standing water. The area is basically thorn scrub forest, but is highly disturbed by agriculture and there are only patches of the forest bordering the wash. No Anelytropsis was found. By ruling that the abundant leaf litter below the trees present. However, Jim Sweet collected two Parrynolcus ———— on the same exposed plant adjacent to one of the small pools : one individual on the surface of a leaf in full sunlight, the other the leaf apex. He and I each collected one Sceloporus cariabilis, mine taken from beneath a brush bordering the wash. An Ameiva was also seen on the trestle's foundation, but was not taken. We then drove N and took Mex Hwy 80 W towards the Sierras. Taking left turning to El Salto we drove on to the waterfall a few miles beyond the town. There is an