very tall, and are mostly fir (?) trees. This evening when I came home at about 6:15 I saw three or four flying about quite high in the air and noted two of them alight in trees; the sun was still quite high. August 7, 1907. Alameda to and from San Francisco, Cal. Conditions: Overcast in morning; Wind; moderate temperature. In the light near the roundhouse a number of gulls and large shore birds were noted this morning on the strip of sand and mud still untouched by the water. In the afternoon several adult Larus occi- dentalis were seen flying about in front of the Ferry Building. Only an occasional bird was seen until on the on the eastern side of the bay when two or three adult Larus heermanni were seen, one flying westward close to the water, and several Larus delawarensis, both adults and young were noted on the water in com-