E.L. Karlston 1955 Rana muscosa April 13 3 mi E XNE Chiquapin, 7500 ft., (meadow SE side road) Mariposa Co., Calif. 3 P.M. Adult frogs active in icy stream flow along margin of snow brakes in meadow. They swam to bottom of pools in stream and quickly buried themselves in the mud. Water temp. (flowing) 1.9° C in one pool containing 3-4 frogs. No sign of eggs. Snow covers nearly all of open meadow, to maximum depth about 2 feet. May 19 Same locality. Adults collected in small stream. Snow 2/3 off meadow. One pair in Angeles. Water temp. 6° C. at 2:15 P.M. No eggs seen. Most tried to escape by burying themselves in silt of bottom. Chose deeper pools, slower moving water. June 5 More meadow, 7150 ft., Y.N.P., Mariposa Co., Calif. A dozen or so taken from stream course meandering thru the meadow. Thamnophis elegans adult found with a large frog recently swallowed. No eggs seen. June 7 Kaiser Beck Meadows, 8000 ft., Fresno Co., Calif. 10:45 A.M. Frogs abundant, mostly in silt holes or deeper stream courses. Eggs (2 clusters) in moving water 18.6° C. at 10:45 A.M. Air (shaded) 19.8° C. Clusters approx. 2 x 4" oval shaped. Eggs appear undewed or only dewaxed stage. Depth 6", flow 20" across, water moving 1 ft 2-3 seconds. Eggs collected.