Plate 70. 



1. West face of JIuiokau, looking across the wide reef flat into tlie lagoon. 



2. Northern extremity of Ravahere, looking across the wide hare i-eef flat of tlie west face, 



showing the islands on the east face of the atoll. 



3. Horn of the western extremity of Ntikutavake, showing reef flat platform lagoon at 



the base of a high .shingle and coral sand beach, seen from the sea. 



4. Sand dunes on the east face of Nukutavake, overwhelming the vegetation of the land 



rim, line of Nullipore knolls on outer edge of reef fiat platform, seen from the sea. 



1-4, A. G. M., ri]..t. 



