San Felipe, s.l. Lower Calif. Mexico April 6, 1920. Oidemia perspicillata were in flocks of from 10-20 and often close to the shore. The Oidemia deglandi was seen all alone with a flock of perspic- illata. Three Larus hemmanni were seen in a large flock of gulls. Came back partly blinded and saw numerous Jackrabbits, Mimus polyglottis leucopterus, Toxostoma deserti, Geelvinkia brunnea brunna- eacapillus couesi, one Sophistyx calif ornicus, one Myiarchus cinerascens vallida cinerascens quite a few Auriparus flaviceps, New Phamaeopha intensa and two Veturis parisorum. Took one Sophistyx californicus vallidea one Toxostoma lesetti, one Geelvinkia brunneicapillus couesi and one Myiarchus cinerascens cinerascens. Lamb found a heron's nest in a mesquite. It had three eggs, and a wait for the bird resulted in a miss. The Sophistyx californicus vallidea was killed in the brush under a mesquite Tree & located by his flucking after a Myiarchus cinerascens cinerascens had been shot from a giant cactus near by.