Plate 75. 



1. Tridat'iia islets in the lagoon of Pinaki. 



2. On the reef flat platform at the entrance into the lagoon of Pinaki, looking west. 



3. Windrows of Tridacnas on the lagoon face of the land rim near the entrance into 



Pinaki, 



4. Vegetation of the land vim of Makemo. 



1-4, C. II. T , Phot. 



