Cogswell 1948 Erolia minutilla Oct. 31 - Bay Farm Id., Alameda, Alameda Co., Calif. (see entry under Erolia alpina regarding zone of foraging). Dec. 30 - Beach opposite South end of Morro Bay, San Luis Obispo Co., Calif. - a single flock estimated to contain 150 individuals (all checked for being this sp. & not E. mauri) seems rather unusual a number for a pure sandy beach. [see, by contrast Ereunetes mauri.] 1949 Feb. 13 - Greenbrae, Marin Co., Calif. - a flock of about 250 (plus 1 Ereunetes mauri) were standing on the ice of a shallow water area (presumably fresh water) at the edge of the marsh along road toward Ross. Some of them moved about on the ice, a few slipping and recovering position by rapid wing fluttering. Others came in to join the flock while we watched. Tide high in nearby bay at this time. Apr. 23 - N.W. end of Bay Farm Id., Alameda, Alameda Co., Calif. - Sur- prisingly few, even around the usually favored fringes of the Salcomia. Only 2 seen at such edge going out from Island Rd. to mud flat; a diligent search among hordes of E. mauri there revealed NONE.