Davis 1940. Austin tr., 80', 1 mi. s. Cazadero, Sonoma co., Calif. Oct. 12. at this time was 25' in some places being only about 6' wide. Average depth is about 1 ft., some places being only 4" deep, other deep holes going over 6'. The exposed streambed consists of sandy, gravelly, and rocky bars supporting scrub willows. Snags of drift in these willows indicate a spring depth of about 4' for the stream. The current at the low stage is very slow, and in wider runs, there is little water movement. In narrower places, where the current moves faster, small rocks have gathered and riffles formed. Frogs were often found in such places. The frogs were all active, and gave no impres- sion of slowing up due to the late season. It is worthy of note that two pairs of copulating Triturus si-milans were seen in this same creek, indica-ting that the breeding seasons of all these amphi-bians might be longer than is now assumed. Laboratory inspection of the frogs showed enlar-ged testes in all the ?'s, and egg masses in the ?.'s. These masses covered 1/3-1/2 the length of the body, were coal black, and distinctly lobed, there being usually 5-7 such lobes. The distal portion of the oviduct was empty, but prominent. The ?'s had testes up to 6 mm. in length, and the nuptial excres- cence on the first digit was well developed. This