98 bulletin: museum of compaeative zoology. 



the projection of Na Potu on the south. The deepest part of the lagoon 

 is in the eastern point. It is only nine fathoms, and north of Karoni 

 not more than seven. jSTa Potu, as the eastern point of the lagoon is 



NORTHWEST POINT OF MOTHE. 



called, is studded with rocks and heads. Off the northwestern point of 

 Mothe we could distinctly see that the negro-heads rising upon the plat- 

 form of the outer reef flats were of volcanic origin. Mothe resembles 

 in shape Lakemba and Kanathea. 



Kambara. 



Plates 2Z, 22*, Fig. 2, and Plates 77-79. 



Kambara Island is elliptical, nearly live miles in length, with a great- 

 est breadth of three (Plate 22). It is surrounded by a rim of ele- 

 vated limestone enclosing a depressed basin. The rim has an average 

 heit^ht of between 300 and 350 feet, with steep cliffs on the sea face 

 (Plate 77). On the northwest face of the island, near the village of 

 Tokalau, the elevated limestone ridge is broken through by a conical hill 

 470 feet high, which is of volcanic origin, and the flanks of which underlie 

 the elevated limestone ridge resting on its sides (Plate 78). From this 

 makes out a flat covered with negro-heads, all of volcanic origin, and of 

 rocks similar to those of the high hill, while on each side the flats are 

 covered with negro-heads composed of elevated limestone ; on both 

 grow very flourishing coral patches, and both are steep to, the reef flat, 

 passing rapidly into deep water, plainly showing that the corals have 

 had no share in shaping either of these slopes, the one composed of vol- 

 canic rocks, the other of elevated coralliferous limestone.^ The island is 



1 Throughout Fiji we found along the cliffs and sea face of limestone islands 

 masses of the red eartli so characteristic of the denuded limestones of the Bahamas 

 and Bermudas, as at Kambara, Ngillangillah, Yangasa, Oneata, Ongea, and other 

 islands. 



