Journal Sonora, Mexico April 21 Passed the border without even having a bag opened and headed south at 4:30 P.M. There are customs stations at the south edge of Nogales, 12 mi. south of Nogales and at Brown, 40 mi. south of Nogales. Only auto and tourist permits were checked at these stations, though at the last one, the man showed some interest in a package of .38 cal. shot shells he noticed in the glove compartment. We drove 119 miles after dark, some of it over the same stretch twice when we went back for gasoline, and didn't see a single snake on the road. The air temperature where we started at Puerto Lopejo (17 mi. S Casa Blanca) was 21.6°C at 8:15 P.M., and at our camp a few miles past Hermosillo at midnight was 20.8°C. There are no more, April 25 Drove to Guaymas in the morning and then back to Bahia San Carlos. The road to San Carlos Bay is about four miles from the Misioner junction (toward Hermosillo) and has been built up into a virtual superhighway. Progress has begun to discover Bahia San Carlos – there is rumor that a resort hotel is in the offing. Tonight's camp is on the narrow neck of land connecting separating Ensenada de los Tatos and Bahia San Carlos. This neck of land is composed largely of water-worn stones 6" to a foot in diameter. It has the appearance of a beach deposit. We thought was the only liquid seen here, but was abundant. The terrain about here is most rocky. Hillsides as littered with angular chunks of volcanic rock; there are numerous jagged outcrops. Two Phyllodactylus homo- lophurus were found running across an outcrop after