Hyila regilla (?) Aug. 30 150 yards E Tiger Pass Ranger Station, 9430 ft., Tuolumne Co., Calif. Recently metamorphosed (of this summer) abundant in grasses. One pond, now 50x20 x 16" deep, still for toads in it with tails, but nearly all have emerged. 12:50 P.M. (D.S.) Young (body length 3/4") tree-frog noted at bottom of lake 2' from edge in water 16" deep. No tail vestige, light gray below. Bottom of lake light brownish. It remained there for at least 10 minutes. Possibly I had stirred it up while it rested at the lake edge, forcing it into the water. Another I saw swimming on surface 10' from above the grassy lake edge. Oct. 16 same locality as above. No Hyila seen 2-4 P.M. today. Air temperatures ranged from about 8-14° C. Some ice crystals edge of N facing banks of ditches and rivulets. Wind of near gale velocity. Hibernation of tree-frogs this elevation may be effective. Oct. 16 Hyila adults and subadults out in leaf litter in front of Ranger's Club, East Center, Yosemite Valley, Mariposa Co., Calif. 9 P.M. Air temperature 14.1° C. Oct 17 Dozens of subadult (young of this year?) collected from under a plank near temperature station Sentinel meadow, 1/2 mi. S East Center, Yosemite Valley. Average body length 5 individuals 19.7 mm. One adult only collected 31.2 mm. Air temp. 9 A.M. 48° F. Few other Hyila active in dew-covered grasses.