EL Karatam 1954 Hyla regilla Jan. 10 1.3 mi. N, 0.2 mi. W Civic Center, Richmond Cantia Costa Co., Calif. First check of this pond area along S.R. tracks (see Bufo notes for description of area). At 4:30 P.M. the weather overcast, cool, air temp. above dange grass 11.0°C., water temp. 1" below surface 11.5°C. Recent rains have swollen ponds adjacent to railroad bed. Few male Hyla calling intermittently but no general chorus. No eggs seen in ponds. Feb. 1 night check of same locality. A raucous Hyla chorus from all ponds and smaller pools in area. Rains since Jan. 10th have increased size of ponds, probably 6" rise water level and 10+ yards more width. A half dozen egg clusters collected at one end of pond W side of N-S running tracks (just S of small manufacturing plant). One pair taken in complexus, only 2 females collected. Eggs early cleavage. Breeding of Hyla just getting started. Cold, clear night. Air temp. 7:35 P.M. 8.2° at 2" above water. Air temp. over dry grass surface 5.8°C. Water temp. 9.8°C. Noted curious case of a male adult Hyla "inflated" subcutaneously and actually floating on water surface (see sketch). It was helpless when rolled over on rock but