86 FOYE. 



B. Mollusca, — Determined by Dr. Paul Bartsch. 



Cardium sp.?, Walu bay, Suva, Viti Levu, (30 to 50 feet). 



Cypraea sp.?Walu bay, Suva, Viti Levu, (24 feet). 



Lithophagus sp.?, Walu bay, Suva, Viti Levu, (25 feet). 



Lithophagus sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 



Lucina sp.?, Mbuambua, West of the mouth of the Singatoka river, (10 to 



15 feet). 

 Pecten sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 

 Pecten sp.?, Mbuambua, Singatoka district, (10 to 15 feet). 

 Tapes sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 

 Trochus sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 

 Trochus sp.?, Mbuambua, S. W. Viti Levu, (10 to 15 feet). 

 Trochus sp.?, Walu bay, Suva, Viti Levu, (25 feet). 

 Turritella sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 

 Venus sp.?, Na Sana Sana, S. W. Viti Levu, (10 to 15 feet). 

 Venus sp.?, Mbuambua, S. W. Viti Levu, (10 to 15 feet). 

 Venus sp.?, Walu bay, Suva, Viti Levu, (25 feet). 



C. Pisces. 



Diodon sp.?, Walu bay, Suva, Viti Levu, (2.5 feet). 



(A new species now being studied by Dr. C. R. Eastman.) 



The rocks of the coastal-plain series, of which the Suva limestone 

 forms a part, appear to be decidedly younger than the limestones of 

 the interior. Evidence in favor of this view is as follows: — 



(1). Boulders of the older limestones occur in the basal conglom- 

 erate of the coastal series near Na Roro, 5 miles from the mouth of the 

 Singatoka River. 



(2). The interior marls are highly folded, in contrast to the low- 

 dipping coastal series. 



(3). The coastal series are much less recrystallized than the interior 

 marls. 



Woolnough (1907) has indicated on his maps of Vitu Levu only one 

 series of marls and has placed this series in the Middle Tertiary. The 

 writer early came to the conclusion that there were two series of rocks. 

 Later he found that the order of events in Vitu Levu closely corre- 

 spond to the order as made out by Mawson (1905, pp. 471-472) in 

 the adjacent islands of the New Hebrides. These events may be 

 tabulated as follows: 



(1). " — local shallow marine conditions and subdued volcanic 

 activity. 



(2). " — development during Miocene times of a fold-ridge." " The 

 folding force would appear to have been exerted from the direction of 

 Fiji, against the foreland of New Zealand crystalline schists and gneisses. 



(3). " — subsidence of outer wing (of fold) followed by extensive 

 late Miocene andesitic eruption along the plane of weakness." 



(4). " — faulting of the inner wing of the fold along the line of the 



