Davis. 1940. Austin Cr., 80', 1 mi. s. Lagadera, Sonoma Co., Calif. Oct. 12. About 4:45 p.m. - 5:45 p.m. We secured about a dozen Rana b. boylii, every one of which was affected with "red-leg." Saw at least a hundred small frogs of this year's hatch. Collected one large and several medium-sized individuals, and a few small ones. They were all quite active, and up on the rocks about one jump from H2O. While on shore, their gray, almost silvery color was quite protective, but in the water they stood out sharply from the darker rock and gravel bottom. Upon being startled, they dove head-long into the water, and rushed their way beneath a rock, into the silt, or under any snag or solid object. In most cases they left their hind legs projecting, and it was an easy matter to spot these appendages and secure the animals. As long as the head was concealed, the animals remained motionless and the hand could be brought slowly over the legs without any movement on the part of the animal. In many cases, however, the frogs, once startled from the shore, would not stop moving until they had gone well out of reach. In stretches of silt bottom they tended to disappear into the silt, where they invariably escaped. Austin Cr. is low at this time of year; the average highwater streambed is 50'-100' wide, and the stream at maximum,