Davis 29 946 Prunales National Monument, San Benito Co., Calif. to Canyon, Contra Costa Co., Calif. May 13, 1946 jagged, and the flats are sandy, or else covered in places with a short, burnt grass cover. Vegetation is very sparse. Seeing this country, I understood how forms like Sceloporus magister and Landusia (vigilis?) had been taken this far north. It is possible that other desert-dwelling forms may be turned up in this area. From Panoche we went over Panoche Pass and thence to Canyon, Contra Costa Co., Calif. via Hollister, Gilroy, San Jose, Hayward and Oakland. At Canyon we stayed overnight at the home of Dr. Robert Peters, and will return to MU2 tomorrow.