28 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
Mbengha Reef, I was able to examine the sea face of the reef, ana 
found that in Frigate Passage both sides of the reef were flanked with 
large heads of corals beginning in from five to seven or eight fathoms. 
On the outer face, though corals were growing, there were no large 
heads, at about six fathoms we found Madrepores, Fungiz, Pocillopores, 
small heads of Porites, Astreans, and of Mzandrinas and Gorgonians. 
This belt extended to the line of breakers pounding upon the reef flat. 
Outside of six to eight fathoms the corals seem to have disappeared, as 
the lead brought up nothing but coral and coralline alge sand. 
Kandavu. 
Plates 10, 11, 50. 
The extent of the erosion and denudation which has taken place 
along the coast of Kandavu is well exemplified by the John Wesley 
Bluffs near the village of Tavuki (Plate 10), and similar bluffs rising 
to the westward of Tavuki Bay. The John Wesley Bluffs (Plate 50) are 
a line of nearly vertical cliffs of volcanic origin cut into wide rounded 
lamellar masses, rising to a height of fully 500 feet on the east side of 
Tomba ni Tavuki. A part of the hill slopes on the west side of the bay 
are covered by the rounded tops of similar rocks cropping out on the 
surface, giving the slope the appearance of a graveyard crowded with 
dome-shaped monuments. | 
The heads studding the Bay of Tavuki, and forming the extension of 
the outer reef patches parallel to the coast, are covered with thriving 
corals, growing upon a substructure of volcanic rocks, as is clearly seen 
from the nature of the negro-heads cropping out in the bay. 
With the exception of the broad fringing reef stretching to the west of 
Tavuki, the north shore of Kandavu is edged by a narrow fringing reef 
(Plate 10), and from Yale Point to Tomba ni Richmondi an indistinct 
- barrier reef extends, made up of small distant patches, except where the 
Malatta Reefs enclose a wide bay north of John Wesley Bluffs, studded 
with coral patches and heads. The south shore of Kandavu is likewise 
edged with a narrow fringing reef in Soso and Kandavu Bays inside 
of the broad barrier reefs across their entrance. The islands and islets 
within the North Astrolabe Reef Lagoon are also edged with narrow 
fringing reefs. 
The platform of submarine erosion extending north of the eastern 
extremity of Kandavu is one of the best examples of its kind we find in 
Fiji. The great lagoon, with its islands and islets, represents a stage of 
— el 
ee 
