Paul DeBenedicti 1960 Phyllodactylus homolepidurus Dec 31 8.0 mi W (by Mex. 15) Hermosillo, Sonora, Mexico. - On a rocky hillside to the west of the highway we found many specimens of this species associated with Urosaurus and Ctenosaura. The hill was covered almost entirely with sand stone and loose, flakey granite. The animals occured primarily on the sandstone. They were found only in the larger crevices examined. The vegetation around the site was primarily gassy with many spiny creosote(?) bushes and another bush with a willow like leaf. The animals were in crevices free of leaf litter. Scorpions and whip scorpions were common in the crevices. Under one large flake 4 animals were found. Most of the others harbored only 1 single animal Most of the adults were in light phase when collected, cool and inactive. The juveniles also inactive, were more often in the dark phase. Air temperature was 19.6 ° C, about 4 feet from the ground. No water near here. There were many prickly-pares and organ pipe cactuses here.