FORAMINIFERA IN THE RAISED REEFS OF FIJI. 361 
PAUMOTUS GROUP. Maxatea (Memia or Avrora l.). An ele- 
vated mass of coraliferous limestone with a comparatively narrow shore 
platform cut from the base of the cliffs. It is the highest member of the 
group, reaching 230 ft. 
2d terrace. No organisms. 
Basin, 150 ft.-175 ft. Lithothamnion and Mollusca, the former 
abundant. 
Foraminifera : POLYTREMA MINIACEUM Pallas, sp. 
PoLYTREMA PLANUM Carter. The two species of 
PoLYTREMA are encrusting forms, the P. pLaNUM is 
here growing on P. mintaceum, and the latter on 
Lithothamnion. The three organisms make up the 
bulk of the rock. 
CaRPENTERIA. 
GYPSINA. 
1 AMPHISTEGINA, one specimen, which may possibly be 
HETEROSTEGINA. 
3d terrace, 200 ft. A coral rock which has undergone alteration. 
Niav. — This island, like the others of the group, has been greatly de- 
nuded. The Tertiary limestones do not occur at a higher level than 
about 16 ft. It is the only member of the group which possesses a 
lagoon shut off from the sea. 
20 ft., half-way across the rim. A coral rock, a fragment, apparently 
of a mollusc, occurs, but alteration has rendered it indistinct. 
THE LADRONES. Guam.— The northern half consists of raised 
limestones, which form vertical cliffs on the eastern side, 109 to 300 ft. 
high. In the southern half, volcanic rocks, in places, burst through the 
limestones. This part of the island reaches 1000 ft. 
Mt. Makawia, near the summit. A fragmentary rock made up of or- 
ganisms broken to a uniform small size. They comprise Lithothamnion, 
Polyzoa, and 
Foraminifera : Muivroiina, fairly numerous. 
TEXTULARIA. 
TRUNCATULINA, numerous specimens. 
? SPIRILLINA, one doubtful specimen. 
? CARPENTERIA, numerous, rather indefinite 
fragments. 
GYPSINA. 
POLYTREMA. 
