Hooper 1939 I Ternary Aug 16 Guernville, Sonora Co., Cal. The following catch 107.3 F 4 Peromyscus maniculatus 3 Mus musculus 2 M - 1 F Taking a short drive from Guernville we drove down the river to Monte Rio and then turned north and drove to Cayaderos. At Cayaderos we turned west on the Cayadero Fort Ross road. About 2 mi W of Cayaderos I shot an adult Beechey ground squirrel Citellus Beecheii . Driving on to Twit Ros we here turned south and drove down the coast line to Jenner. Approximately 3 mi NW of Jenner I shot a Bluebird, It was out of a flock of perhaps 15 which were foraging in the dense chaparral of the slope of the steep hillside leading to the sea. I neglected to mention