L 'DICKER 1980 Biogeologists Trip to Sierra Foothills; 17-18 May May 17 - Group convened at Forest Genetics Institute in Placerville, El Dorado Co., at about 11:30. I went with Andrew Cockburn and Dick Sager. Tours + talks at 12 first, at Vicinity during afternoon & evening. Spent night at Institute. Leader of trip was Lady & Stellins. Arrangements by Wm. Crittendall & Harold Kerster. May 18 - After breakfast at the Institute, we drove in a conveyance of 13 cars N of Placerville on the road to Georgetown. Saw, at 1:05, N of Fork to Garden Valley via turnoff on Bear Creek Rd. for second hike until just like Meadow Brook Rd. At this point traversed creek around the road to be dropped to examine a serpentine outcrop for endemic plants. Took numerous photographs. Found 1 dead Phrynosoma cornutum when we discarded after checking identification = Steller's field spink. Harold Baker spotted a pair of these lizards copulating. Numerous photos were taken of the pair which was in a ventral to ventral position; 8 on top. After the photographing, I checked them to confirm that individual on top was 8 (by hemipenis evident), & an opposite dawn was female (clearly had enlarged eggs). Even after handling, they remained reluctant to move & stood close together, & we left them this way. There were also several distinctions in coloration & in the sharpness of the head spines. The 8's spines were longer & sharper.