J. Rodgers -1939 149 Itinerary, etc. May 13 Arroyo Mocha, 750 ft, 6.1 mi. SE Livermore Alameda Co., Calif. John Tash, Charles Miller and I passed through Livermore about 10:38 am today, and entered Arroyo Mocha about 10 minutes later. We were heading and Art Newcomb for a place where John Tash had collected some whiptail last Sunday (May 7). About six miles up the road we crossed it turns to the right (45°) and crosses a bridge, crossing from the east to the west side of the creek. The road immediately turns left (45°) and continues on straight for about 250 yards. It was along the foot of the hill to the west of this straight stretch and along the creek to the east of it that we did all this day's collecting. Most of the whiptail were seen along the gravel terraces of the creek around the bases of Baccharis viminea bushes. Two were seen along the edge of the road. One ran up Tash's pantleg and we ran into a gopher ground squirrel hole; we caught them both. The road is an old riverbed terrace about 4 to