Hooper Citellus douglasii Noted workings on exposed "overgrazed" hillsides along the "Redwood Highway" from just north (+1 mi.) of San Rafael to Petaluma. Seen within 200 lyds. of tide lands near Petaluma. Account of trip of June 21-June 28, 1938, north of San Francisco Bay in Counties touching on the bay: Passing over Antioch Bridge thru Rio Vista to Fairfield: I noted no squirrels until about Benverton. One picked upon the road about 3 mi. SE Fairfield was put up by D. Feathers. The country south of Cordelia out toward Benicia probably supports these animals. Montezuma Hills also probably harbors them. No signs of the animals were noted on embankments on the N side of Antioch Bridge. All the ground around and on Sherman Island up to Rio Vista is under cultivation-asparagus mostly-and probably does not harbor squirrels. Hills not having too high glass and above high water level are potential ground squirrel areas. None noted in redwoods or in coastal grassland belt-ie, grassy hills bordering the ocean and to 1/2 mi. to 3 mi. back.