Caught a small brown Hippoboseid fly on a Kingfisher. Mr. Beck gave me a large greenish Hippoboseid which he thinks came off a pigeon he was skinning. Friday, August 29, 1924. Olorua and Aiwa. Ashore at 6:45, taking camera to photograph the bedding formation. Walked entirely around the island to pick out best spot. Small cave or clef in rock on N.W. side in a bed of pink, purple and yellow coarse sandstone (?). (Took sample). Low cliff of gray and red-brown lava at S.E. point with bed of consolidated tuff (?) Swarms of small red-brown ants under dry bark of fallen Casuarina trunks; also collected a silver fish and a small brown beetle. Demolished a partly rotten log and secured the larvae, pupa and adult of a moderate sized Lucanid beetle. Also caught a Cutilia sora roach and saw one of the large black wingless species. A mosquito, either Aedes scutellaris or A. pseudoscutellaris present and active. Roll 63:5. Outcrop of bedded strata on low divide between the two west hills, (11534) which dips very slightly toward the N.E., looking south. " 63:6. Bedded strata at S.W. point which dips to S. by E. perhaps 5° or (11535) 10°, looking east. (Took a large sample here which shows several layers). " 64:1. Bedded strata at N.W. point which dips strongly to the N.W., look- (11536) ing east. The camera is level. Collected a few specimens in Ipomoea patch and along beach, return- ing to schooner at 10 A.M. Underway immediately for Aiwa. Roll 64:2. Aiwa islands, looking S. by W. (Showing principally the eastern (11537) island). " 64:3. Aiwa islands, looking S.E. (Showing principally the western island). These two small limestone islands lie close together in nearly a straight line, within a much extended reef. The western is slightly the larger and higher,