AGASSIZ: FIJI ISLANDS AND CORAL REEFS. oT 
of the island from the narrow outer reef flat. We also passed the atoll 
of Thakau Vuite (Plate 22), separated from Komo by a channel of 
about one and a half miles in width, with a probable depth of about 
150 fathoms. The lagoon is about two 
miles and three quarters long by two ee atin ee 
miles broad, with a greatest depth of six- ns a 
teen fathoms; there is an opening for 
boats into the lagoon on the northwest side. The encircling reef flat 
is narrow, and there is a sand key on the northeast horn of the 
lagoon. 
OLORUA. 
Totoya. 
Plates 19*, Figs 4-7, and Plates 23, 66-69. 
Before entering the western passage through the outer reef surround- 
ing Totoya, we steamed round the eastern and northern edges of the 
outer reef to obtain a good idea of this interesting island. Totoya 
(Plate 23) is triangular in shape, enclosing an inner basin, nearly circu- 
lar, of three miles in diameter, and with a greatest depth of 35 fathoms. 
The width of the rim varies from two miles to a low narrow isthmus 
on the western face (Plate 66), the highest points of the rim being 
1,200 feet above sealevel. The eastern part of the rim is the broadest 
and highest. The basin is open to the south (Plate 67), the horns of 
the rim being about two miles distant. Stretching across this opening is 
the extension of the outer reef, which connects at the extremities of the 
BASIN OF TOTOYA CRATER, FROM THE SUMMIT OF THE NORTHERN RIM. 
rim with the narrow fringing reef bordering the island. Between the edge 
of the fringing reef on the western horn and the outer reef there is a nar- 
row but deep passage called the “ Gullet”’ (25 fathoms), affording a good 
entrance into the basin filling the extinct crater of Totoya, in which we 
anchored close to the inner edge of the northern part of the rim. The 
outer reef extends unbroken from the entrance on the west side to its 
