E. L. Kardstrom 1954 Hyla regilla (4) April 25 Base of Sentinel Rocks, 4100 ft., Yosemite Valley Mariposa Co., Calif. 2:15 P.M. (D.S.) stream bed (new dry) I found one Hyla adult ?? just under the edge of a granite boulder. This animal would appear to be at least a few hundred yards from any standing water and 100 feet above the valley floor with the wood between it and the Merced River. The snow at the line of the cliff is another 50 feet above the site where animal taken. Stebbins also found an adult ♀ in center of branchless rotten log 2 ft. in diameter. Rotten wood 10°C at 2:50 P.M. (D.S.T.) Log 12 ft. long along slope—slope 8° to N. Frog had not emerged from hibernation? Skin but active when handled. Molea heard calling from rocks further up talus slope. Incense cedar, white fir. Canopy 80%. Site where Hydrimantes gotten down slope 200 yards E. April 30 Stream meow, 4000 ft., Yosemite Valley, Mariposa Co., Calif. Hyla chorusing in the evening 9:00 P.M. (D.S.T.) and one pair taken while copulating. Sample of toads from pool A taken. (See B. lower account for temp. data). Recent rains have provided new pools and this may accelerate Hyla breeding activity. May 27 Kaiser Peaks meadow, 8000 ft., Fresno Co., Calif. No toads but eggs. One cluster to tail bud stage. No eggs seen at higher 9200 ft. Meadow near Kaiser Pass.