W. Reimer 1950 Journal 19 Feb. Calif.; Contra Costa Co. Somewhere about NE of Mt. Diablo Peak stopped to examine two large cattle tanks just N.S. Marsh Creek Rd. Open quarry hills, looks ideal for Triturus, for Ambystoma also, but none seen. Excellent appearing stretch of stream immediately below Marsh Creek Park on Marsh Cr. Rd. examined. Here, stream flanked by heavy woodland on one side and light oak woodland with grass and some dry chaparral on other side. One R. aurora taken, but not kept, in rotten log. At spot almost due S.S. Antioch again examined Marsh Cr. Appeared excellent. No Triturus. Local rancher and also several local boys state "water- dogs" or "lizard" present in stream 2-3 weeks later in season - about early March. Recognized specimen when shown one. Stream 1-2 ft. deep and 20-30 ft. wide. Dry in summer so animals must breed in some more permanent water. Rancher says large numbers removed from Sycamore Springs "back up in hills" last (?).year. One Rana boylii taken in stream. Do Triturus have a different activity period if present here?