Plate 69. 



1 The northwestern and northern encircling reef line, as seen from the ridge of the central 

 crest of Man-^a Reva near the tunnel leading to Kirimiro, west face of Manga Reva. 

 The extreme Tand is Point Teaua-ua, the northwestern point of -Manga Reva Island. 



2. A part of the same encircling reef line as fig. 1, seen from a somewhat higher point of 

 the central ridge. 



