BY FREDERICK CHAPMAN. 263 



The Foraminifera contained in this specimen are as follows : 



Globlgerina sp. (of. G. buUoides, d'Orb., or G. rosacea, d'Orb.). 

 Carpenteria sp. 



? Polystomella, or a related nummulinoid form, the peripheral 

 edge showing the "marginal cord." 



Lepidocyclina insulce-natalis, Jones & Chapm. 



,, ), var. incequalis, Jones & Chapm. 



134.—" From the top of the N.W. spur of Partua Tabua, on 

 the track 1500 ft. above sea-level, Santo." 



A dark greyish Nullipore Limestone with Lepidocyclina. In 

 thin sections this rock is seen to consist of organic material as 

 foraminiferal fragments of the coenosteum of (?) Millepora tests, 

 {Lepidocyclina and Heterostegina), Lithothamnion, both encrust- 

 ing and branching forms very abundant (one encrusting example 

 showing conceptacles'), together with fragments of an andesitic 

 rock. The interspaces between the coarser organic and frag- 

 mentary constituents are filled with a fine calcareous mud, and 

 in places they are cemented by crystalline calcite. 



The Foraminifera are : — 



1 Planorhulina (encrusting). 



? Truncatulina (of the lobatula type). 



Miogypsina biirdiyalensis, Giimbel sp. 

 ,, 1 globulina, Michelotti sp. 



Heterostegina cf. margaritata, Schlumberger. 



Cycloclypeus sp, 



Lepidocyclina cf. martini, Schlumberger. 



,, 1 insulce-natalis, Jones & Chapm. 



176. — " Limestone outcrop on Wai Malikoliko near where the 

 track descends to the river, Santo. Beds dipping 70°." 



A dense cream-coloured limestone. 



In thin sections this rock is seen to consist chiefly of the tests 

 of Lepidocyclina and fragments of branching and encrusting 

 Lithothamnion, together with occasional pieces of molluscan 

 shells, often (?) alga-bored, plates and spines of echinoids, coral 

 and milleporid fragments. The organisms in this limestone are 



