Plate 16. 



RANGIROA. 



1. Lagoon lit>iK-li, soutli side of atoll. W. McM. \X., Pliot. 



2. Gap iu land rim, south side of atoll, seen from the lagoon side looking towards old 



ledge sea wall, outliers of sea wall protruding in the gap. M. A., Phot. 



