IL Kordatum 1985 Buffo canorus Aug.30 Tioga Pass -- but not where banks are high. Escape pattern often is for tried to swim out in water, sometimes diving down to bottom like a Rana. However, Buffo does not go far out into pond or do the frogs. 2:15 P.M. check of Dora meadow about 1/2 mi. S of Bergen Station. Adult o's ad f is collected. Few dyla, many Rana larvae in yards but no Buffo. 2:40 P.M. Brief check of a small lake on east side of road about 3-4 miles south of Bergen Station. 2 adult -> canorus only anura seen except for some emerged dyla. Toads found under logs but warm and active when handled. Conversation with Don Mullally at Tioga Pass. He is now curator at San Mateo Marin Museum but finishing up M.S. on Pleistocene distribution at U.C.L.A. He reported finding no canorus at Tuolumne meadows this trip. Suggested California altitude record for B. boreas down? in southern California near San Joaquin -- to over 9000 feet. This I suspected but lack the locality record. Don suggests east slope of Sierra as more likely area for sympatry canorus and boreas. This I have suspected, too, but field work yet doesn't support idea. He claims never to have found a truly dryland boreas at any altitude -- breeding belowin exogated.